Preacherman
Member
Thomas Aveni, a member of the Police Policy Studies Council and training co-ordinator at S&W Academy from 1990-2001, has written a very, very interesting article analyzing police gunfights and their effects on policy and training. I'm posting the shorter version of the article here (and even that is about 25,000 words!).
The longer version, complete with graphs, etc., is a PDF document of 18 pages. I highly recommend it for detailed study - it's at http://www.theppsc.org/Staff_Views/Aveni/OIS- What We Didn't Know Hurt Us.pdf. (If this URL doesn't work for you in your browser, copy it and use Adobe Acrobat to open the link - that worked for me.)
FOLLOWING STANDARD PROCEDURE
A Long-term Analysis of Gunfights and their Effects on Policy and Training
By Thomas Aveni
Central issues of concern and contention with police gunfight marksmanship have been severe errors in judgment and dismal handgun hit ratios. Much more exists that has never been fully explored.
Police handgun hit probability has generally been discussed within the realm of: low expectations of police gunfight performance, based on historical data; whether the way in which police are trained has contributed to low hit probability; and whether physiological and psychological impairments experienced in critical incidents contribute to degradation of performance.
THE NEWHALL WAKE-UP CALL
The single incident credited with initiating the officer survival movement was the April 5, 1970 gunfight that left four CHP highway patrolmen (Frago, Gore, Pence and Alleyn) dead in Newhall, CA. That brief armed encounter, with two convicted felons, brought considerable attention to a host of deficiencies in police training.
One issue illuminated by the Newhall incident was that the four CHP officers fired 15 rounds, three of which were 12-gauge buckshot cartridges, yet inflicted only one superficial wound upon their assailants. Typical of police confrontations, all rounds expended by the four deceased officers appear to have been within seven yards of their adversaries. Also typical of police lethal encounters was that the Newhall firefight occurred during hours (11:54 PM) associated with adverse lighting conditions; atypical was the duration of that firefight, as it lasted an estimated four minutes.
The Newhall incident shocked the law enforcement establishment. It became fodder for police training films and printed narratives for many years to come.
NYPD SOP #9
Implemented in 1970, NYPD's "Standard Operating Procedure #9" became an instant vehicle of enlightenment. SOP-9, a formal Firearms Discharge Report, was implemented to establish documentation of all gunshots fired by NYPD officers. Firearms incidents as diverse as gunfights to officer suicides are documented, as are all accidental discharges of firearms.
While imperfect from the outset, SOP-9 ventured where few agencies had previously dared to go. The brainchild of NYPD's Frank McGee, SOP-9 became the Holy Grail to inquisitive police trainers. In reviewing old SOP-9 reports, it became apparent that law enforcement remains pressed by many issues that police trainers grappled with decades ago. For instance, the 1981 issue of SOP-9 notes, "It has been said that if a man can hit a target at 50 yards he can certainly do the same at three feet. The reports do not bear out that assumption. Standard revolver courses of fire may have little relationship to an individual gunfight."
There is little national data regarding how often officers have used their handgun sights in armed confrontations. What has been available has offered an interesting but inconclusive perspective on sighted shooting. In 1981, NYPD's SOP stated, "Good sight alignment is fundamental to target shooting, yet 70% of cases reviewed indicated that no sight alignment was employed when the revolver was fired."
It also suggested that the tendency to use sighted shooting increased as the threat distance increased. Aiming was described as diversely as merely using the barrel as a pointing reference, to using only the front sight as an aiming reference, to full utilization of front and rear sights. To date, I have been unable to collect hard data pertinent to the efficacy of point-shooting, or any reasonable facsimile of point-shooting (i.e., "threat-focused shooting", et al.). While I remain open to the possible viability of threat-indexed shooting, I've found nothing substantive to assess it with.
LETHAL ENCOUNTER PROXIMITY
The early years of SOP-9 contained more narrative than it did definitive breakdowns of the data culled from the reporting mechanism. Hit probability was discussed in very general terms, estimated to be "about 25%" and it then dismissed accurate tabulation as being "impossible to document" (SOP-9 - 1981). However, this data does provide an early glimpse of gunfight proximity, which has a profound effect on hit probability. Eighty-two percent of the 250 officers slain were slain within six feet of their assailants.
Do officer's have an innate sense of awareness about how their individual survival diminishes with distance between themselves and their assailants? This issue has certainly been the focus of police trainers for nearly as many years as this data has been available.
The NYPD proximity/lethality model is slightly different from the data culled nationally by the FBI. The dissimilarities in the Officers Killed table are likely due to the expanse of NYPD data: it includes all shootings, not just those in which officers were slain. Fifty percent of 601 officers slain were within five feet of their assailants, while 71 % were within ten feet.
A GUNFIGHT
Technically, and as defined by NYPD SOP-9, a gunfight occurs when officers confront assailants armed with firearms. From a researcher's standpoint, that distinction is important. However, differentiating between reality and human perception might well come down to whether an officer is erroneously convinced that he is faced with an imminent threat from a firearm or is actually under attack from a firearm. Is the perception of a firearm attack enough to influence the degradation of human performance? The data seems to suggest that it does.
SHOTS FIRED/HIT PROBABILITY
Since NYPD adopted semi-automatic pistols (en-masse) in the early 1990s, the number of shots fired per officer has edged upward, though not nearly as much as many have maintained. The number of shots being fired, per incident and per officer, has shown gradual escalation over the last decade. While some may rush to judgment and assert that high capacity pistols are the primary culprits, substantive changes in the way police are being trained to use these pistols have also influenced this trend. The increase in shots fired by officers in shooting incidents appears to be relatively stable when viewed within an historical context.
In addition, since one landmark study-indicated that 85% of officers who were feloniously slain weren't able to fire their handguns before being slain, statistical averages of shots fired must be examined with caution.
An in-depth 1992 review of Portland's police shootings revealed an increase in the number of shots fired per incident from 2.6 rounds per revolver to 4.6 rounds fired from pistols. However, the study also seemed to suggest that hit probability increased with adoption of semi-auto pistols. From January 1, 1983 through January 5, 1990, Portland police reportedly struck adversaries with 24 rounds out of 67 fired (36% hit ratio). Firing semi-auto pistols from July 21, 1984 through February 7, 1992, officers struck their adversaries with 19 rounds out of 44 that were fired (43% hit ratio).
Although data gathered from the late 1980s into the early 1990s seemed to suggest that hit probability had increased with the adoption of pistols, in retrospect that data was inconclusive. There were too few shootings with pistols upon which definitive conclusions could be derived. In addition, many of the officers who were among the first to carry pistols belonged to specialized police units that were afforded more training with pistols than would prove to be practical when pistols were adopted en masse.
THREAT PROXIMITY/ HANDGUN EFFICACY
As poor as gunfight hit probability is inside of three yards, it gets progressively worse from there. The transition from revolver to pistol has had an indiscernible influence in this area since revolver hit probability fluctuated considerably over the decades in which data were collected. Pistol hit probability seems to have fluctuated just as broadly. The majority of state training councils continue to qualify officers to 25 yards. The implication has always been that officers were qualified at 25 yards, even though a substantial number of officers miss most of their shots at this distance on the range. In fact, many marginal shooters drop all of their rounds at 25 yards, yet still qualify at that distance. Street marksmanship seems to reflect and magnify the folly of this anachronism.
LOW LIGHT SHOOTINGS
Where police shootings have been tallied by tour of duty alone, conclusions must be attempted on incomplete data. Note that many daylight shootings occur in poor indoor lighting, and some night shootings occur under ample lighting conditions. For instance, the 2000 SOP-9 states that of 134 incidents, 84 were outdoor and 50 were indoor incidents. By shift assignment alone, the NYPD has indicated that as many as 77% (1996 SOP-9) of police shootings occur under some degree of diminished lighting.
Published data for the Metro-Dade, Miami, Police Department (1988-1994) reflect 62% of identifiable outdoor incidents occurring in lighting other than "Daytime" conditions.
If there is a serious omission in NYPD SOP-9, it is that hit probability differentiation has never been made between low light scenarios and ample-light scenarios. Given the disproportionate number of night shootings, it can be reasonably concluded that diminished lighting has had a substantive influence on the low overall hit probabilities published. However, until this research was undertaken, performance degradation had
never been accurately quantified.
As progressively trained as BCPD officers are for low light conditions, they've still experienced a 30% hit declination from their daylight-hit ratios. Shooting data provided by Los Angeles County Sheriff suggests a 24% decline in hit ratios under low light conditions when compared to daylight conditions. Where and when police hit ratios are seriously examined, a serious departure from training range performance is attributable to low light conditions.
THE BUNCH-SHOOTING PARADOX
So-called bunch-shootings, whereby several officers confront an armed suspect in a given incident, seem to elicit an elevated number of rounds being fired per officer. Until recently, very limited data existed regarding this phenomenon. That early data that did exist suggested that officers firing alone discharged an average of 2.7 rounds, while officers firing in bunches fire an average of 5.9 rounds per officer, per incident. That's a 118% increase in the number of shots fired when officers fire in bunches.
Data recently obtained from Los Angeles County Sheriff (LASD) unearthed some startling new revelations about bunch-shootings. The LASD data represents most of the law enforcement shootings in that county from 1997-2002, excluding those of LAPD. Some surprising patterns began to emerge when this data was analyzed. The LASD data offers us a critical new insight into how bunch-shootings influence officer hit ratios.
The long prevailing assumption has been that officers have generally had a 15-25% hit probability. While the aggregate figures continue to suggest this, the heavy influence of bunch-shootings in the LAC data illustrate a dramatic decline from the average 51% hit ratio when singular officers are involved in a shooting to as low as nine percent when more than two officers participate in a lethal force event. The declination of hit ratios involving singular officer shootings to shootings involving more than two officers is a whopping 82%. Clearly, at least with what data is available, the influence of bunch-shootings far exceeds even that of low light conditions.
Reflect back upon the 1992 Portland statistics previously mentioned, suggesting that bunch-shootings saw the average number of shots fired by police increasing by 118% over the average number of shots fired when officers fired alone. The LAC data suggests that bunch-shootings see as much as a 45% increase in the number of shots fired when more than two officers are involved in a shooting. The old Portland data involved the use of a substantial number of police service revolvers and the early implementation of semi-automatic pistols. The LAC data consists largely of semi-automatic firearms and yet the averages (118% v. 45% increases) differ dramatically.
The 1992 Portland study was based on a relatively small (29) number of incidents and officers (43). The LAC data was culled from 150 shootings, in which 438 officers actively participated as shooters. While the LAC data contained three extreme cases in which 90-201 rounds were fired, the sheer size of the LAC database was able to absorb these aberrations without disproportionately skewing the statistical mean.
Why is such pervasive influence of bunch-shootings affecting the numbers of shots fired by officers, and even more upon their hit ratios? While much more focused research needs to be pursued on this issue, bunch-shootings seem to embody the essence of so-called emotional contagions.
Using the proverbial crowded theater as a hypothetical example, two people smelling smoke in an otherwise empty theater would likely exit the theater briskly but without panic. The emotional synergy of a crowded theater would unleash a very different set of dynamics. This may also be the case in bunch-shootings. Since this contagion theorem would be highly difficult to quantify, the data was closely examined again to look for more discernable and quantifiable variables that might influence bunch-shooting performance.
Many bunch-shootings embody extremely chaotic and complex characteristics. In them are barricaded gunman scenarios, drawn-out foot pursuit and vehicular pursuit scenarios, and scenarios involving heavily armed suspects. Yes, Newhall was a bunch-shooting incident, as was the FBI Miami Shootout, as was the North Hollywood shootout. Hardened career criminals, or those with extreme ideological affiliations, tend to disproportionately confront police in bunch-shooting scenarios. In addition, such confrontations attract police in larger numbers, causing bunch-shootings.
RANGE SCORES/GUNFIGHT EFFICACY
There has long been a degree of controversy regarding whether prowess on the firing range would translate into higher hit ratios in actual gunfights. Very little data is available to elucidate this issue. The 1981 edition of SOP-9 makes this observation:
"An attempt was made to relate an officer's ability to strike a target in a combat situation to his range qualification scores ended with no clear connection. After making over 200 such comparisons, no firm conclusion was reached."
The 1988-1994 Metro-Dade data does shed additional light on the issue, showing slightly higher qualifying scores for those who hit their intended targets in street encounters. However, when held to accepted standards of statistical analysis, the Metro-Dade comparison exhibits no statistical significance between range and street efficacy.
Since most of the shootings examined in this research involved perpetrators who were highly animated when shot at by police, until such time that police handgun qualifications involve naturally and randomly moving targets, and until such time that life-threatening dynamics can be simulated during handgun qualification, direct comparisons are largely senseless. In addition, as much as trainers may wish to pursue this angle to more definitive conclusions, future efforts at quantifying the relationship between range and street efficacy will likely be further complicated because most agencies have adopted pass-fail qualification protocols.
MISTAKE-OF-FACT SHOOTINGS
Until now, all known data pertinent to the frequency in which officers shoot unarmed suspects predates the landmark Tennessee v. Garner case. However, given the frequency in which police engage in low-light lethal force events, the pre-Garner studies deserve serious consideration. The 25-43% frequency in which those studies suggested that police shot unarmed suspects appears dated due to the more restrictive deadly force parameters established by Garner.
However attenuated this phenomenon is since the Garner decision, currently available data suggests that it still persists with alarming frequency. For instance, between 1990 and 2001, the Metro-Dade Police Department reportedly had 22 shootings in which suspects were clearly unarmed, and a dozen others in which the officers claimed they saw guns but no guns were found. All told, Miami officers shot and killed 33 people in that period of years, 11 of which were under questionable circumstances.
The LASD (1998-2002) has provided the most recent quantified glimpse of this phenomenon. Of the LASD incidents (148 total) examined during that period, 27 (18%) were identified as likely mistake-of-fact shootings. Not surprisingly, of that total of MOF shootings, 20 (75%) occurred at a time of day generally associated with reduced light conditions.
Questionable shootings are largely attributable to misidentification of threat level due to impaired visual contrast sensitivity in low levels of ambient light, precipitating suspect behavior, and context-based expectations relative to the nature of the assignment or call. There are training implications embedded in this issue that are numerous and complex. Police training in low light tactics still has a very long way to progress.
Mistake-of-fact shootings may also involve other misleading threat cues. A significant number of shootings took place whereby one or more officers
perceive another officer's stumble and fall as being affirmation that he is under attack. When an officer's fall is in conjunction with an unintentional discharge of his firearm (NYPD's Diallo shooting) it can set off a powerful chain of events.
There is an associative firing impulse where multiple officers encounter what they believe to be an imminent lethal threat. Plausible explanations for these occurrences fall into two categories: officers experience an associative threat assumption phenomenon, as one or more officers conclude that the officer that initiated fire correctly identified an imminent lethal threat; or one or more officers experiences a mistaken origin of fire phenomenon, whereby an officer believes shots being fired by another officer are in fact shots fired by the suspect. This mistake-of-fact occurrence is most common when officers place themselves in a geographical crossfire.
As a result of some of these MOF shooting phenomena, many are also bunch-shootings. Some of the most high profile questionable shootings have embodied both MOF and bunch-shooting characteristics.
Bunch-shootings may also contribute to higher suspect fatality rates. When handgun encounters conclude with a suspect fatality, the number of rounds employed to fell the suspect appear to be high, with the Portland study suggesting an average of 9.3 hits per slain suspect.
(Continued in next post)
The longer version, complete with graphs, etc., is a PDF document of 18 pages. I highly recommend it for detailed study - it's at http://www.theppsc.org/Staff_Views/Aveni/OIS- What We Didn't Know Hurt Us.pdf. (If this URL doesn't work for you in your browser, copy it and use Adobe Acrobat to open the link - that worked for me.)
FOLLOWING STANDARD PROCEDURE
A Long-term Analysis of Gunfights and their Effects on Policy and Training
By Thomas Aveni
Central issues of concern and contention with police gunfight marksmanship have been severe errors in judgment and dismal handgun hit ratios. Much more exists that has never been fully explored.
Police handgun hit probability has generally been discussed within the realm of: low expectations of police gunfight performance, based on historical data; whether the way in which police are trained has contributed to low hit probability; and whether physiological and psychological impairments experienced in critical incidents contribute to degradation of performance.
THE NEWHALL WAKE-UP CALL
The single incident credited with initiating the officer survival movement was the April 5, 1970 gunfight that left four CHP highway patrolmen (Frago, Gore, Pence and Alleyn) dead in Newhall, CA. That brief armed encounter, with two convicted felons, brought considerable attention to a host of deficiencies in police training.
One issue illuminated by the Newhall incident was that the four CHP officers fired 15 rounds, three of which were 12-gauge buckshot cartridges, yet inflicted only one superficial wound upon their assailants. Typical of police confrontations, all rounds expended by the four deceased officers appear to have been within seven yards of their adversaries. Also typical of police lethal encounters was that the Newhall firefight occurred during hours (11:54 PM) associated with adverse lighting conditions; atypical was the duration of that firefight, as it lasted an estimated four minutes.
The Newhall incident shocked the law enforcement establishment. It became fodder for police training films and printed narratives for many years to come.
NYPD SOP #9
Implemented in 1970, NYPD's "Standard Operating Procedure #9" became an instant vehicle of enlightenment. SOP-9, a formal Firearms Discharge Report, was implemented to establish documentation of all gunshots fired by NYPD officers. Firearms incidents as diverse as gunfights to officer suicides are documented, as are all accidental discharges of firearms.
While imperfect from the outset, SOP-9 ventured where few agencies had previously dared to go. The brainchild of NYPD's Frank McGee, SOP-9 became the Holy Grail to inquisitive police trainers. In reviewing old SOP-9 reports, it became apparent that law enforcement remains pressed by many issues that police trainers grappled with decades ago. For instance, the 1981 issue of SOP-9 notes, "It has been said that if a man can hit a target at 50 yards he can certainly do the same at three feet. The reports do not bear out that assumption. Standard revolver courses of fire may have little relationship to an individual gunfight."
There is little national data regarding how often officers have used their handgun sights in armed confrontations. What has been available has offered an interesting but inconclusive perspective on sighted shooting. In 1981, NYPD's SOP stated, "Good sight alignment is fundamental to target shooting, yet 70% of cases reviewed indicated that no sight alignment was employed when the revolver was fired."
It also suggested that the tendency to use sighted shooting increased as the threat distance increased. Aiming was described as diversely as merely using the barrel as a pointing reference, to using only the front sight as an aiming reference, to full utilization of front and rear sights. To date, I have been unable to collect hard data pertinent to the efficacy of point-shooting, or any reasonable facsimile of point-shooting (i.e., "threat-focused shooting", et al.). While I remain open to the possible viability of threat-indexed shooting, I've found nothing substantive to assess it with.
LETHAL ENCOUNTER PROXIMITY
The early years of SOP-9 contained more narrative than it did definitive breakdowns of the data culled from the reporting mechanism. Hit probability was discussed in very general terms, estimated to be "about 25%" and it then dismissed accurate tabulation as being "impossible to document" (SOP-9 - 1981). However, this data does provide an early glimpse of gunfight proximity, which has a profound effect on hit probability. Eighty-two percent of the 250 officers slain were slain within six feet of their assailants.
Do officer's have an innate sense of awareness about how their individual survival diminishes with distance between themselves and their assailants? This issue has certainly been the focus of police trainers for nearly as many years as this data has been available.
The NYPD proximity/lethality model is slightly different from the data culled nationally by the FBI. The dissimilarities in the Officers Killed table are likely due to the expanse of NYPD data: it includes all shootings, not just those in which officers were slain. Fifty percent of 601 officers slain were within five feet of their assailants, while 71 % were within ten feet.
A GUNFIGHT
Technically, and as defined by NYPD SOP-9, a gunfight occurs when officers confront assailants armed with firearms. From a researcher's standpoint, that distinction is important. However, differentiating between reality and human perception might well come down to whether an officer is erroneously convinced that he is faced with an imminent threat from a firearm or is actually under attack from a firearm. Is the perception of a firearm attack enough to influence the degradation of human performance? The data seems to suggest that it does.
SHOTS FIRED/HIT PROBABILITY
Since NYPD adopted semi-automatic pistols (en-masse) in the early 1990s, the number of shots fired per officer has edged upward, though not nearly as much as many have maintained. The number of shots being fired, per incident and per officer, has shown gradual escalation over the last decade. While some may rush to judgment and assert that high capacity pistols are the primary culprits, substantive changes in the way police are being trained to use these pistols have also influenced this trend. The increase in shots fired by officers in shooting incidents appears to be relatively stable when viewed within an historical context.
In addition, since one landmark study-indicated that 85% of officers who were feloniously slain weren't able to fire their handguns before being slain, statistical averages of shots fired must be examined with caution.
An in-depth 1992 review of Portland's police shootings revealed an increase in the number of shots fired per incident from 2.6 rounds per revolver to 4.6 rounds fired from pistols. However, the study also seemed to suggest that hit probability increased with adoption of semi-auto pistols. From January 1, 1983 through January 5, 1990, Portland police reportedly struck adversaries with 24 rounds out of 67 fired (36% hit ratio). Firing semi-auto pistols from July 21, 1984 through February 7, 1992, officers struck their adversaries with 19 rounds out of 44 that were fired (43% hit ratio).
Although data gathered from the late 1980s into the early 1990s seemed to suggest that hit probability had increased with the adoption of pistols, in retrospect that data was inconclusive. There were too few shootings with pistols upon which definitive conclusions could be derived. In addition, many of the officers who were among the first to carry pistols belonged to specialized police units that were afforded more training with pistols than would prove to be practical when pistols were adopted en masse.
THREAT PROXIMITY/ HANDGUN EFFICACY
As poor as gunfight hit probability is inside of three yards, it gets progressively worse from there. The transition from revolver to pistol has had an indiscernible influence in this area since revolver hit probability fluctuated considerably over the decades in which data were collected. Pistol hit probability seems to have fluctuated just as broadly. The majority of state training councils continue to qualify officers to 25 yards. The implication has always been that officers were qualified at 25 yards, even though a substantial number of officers miss most of their shots at this distance on the range. In fact, many marginal shooters drop all of their rounds at 25 yards, yet still qualify at that distance. Street marksmanship seems to reflect and magnify the folly of this anachronism.
LOW LIGHT SHOOTINGS
Where police shootings have been tallied by tour of duty alone, conclusions must be attempted on incomplete data. Note that many daylight shootings occur in poor indoor lighting, and some night shootings occur under ample lighting conditions. For instance, the 2000 SOP-9 states that of 134 incidents, 84 were outdoor and 50 were indoor incidents. By shift assignment alone, the NYPD has indicated that as many as 77% (1996 SOP-9) of police shootings occur under some degree of diminished lighting.
Published data for the Metro-Dade, Miami, Police Department (1988-1994) reflect 62% of identifiable outdoor incidents occurring in lighting other than "Daytime" conditions.
If there is a serious omission in NYPD SOP-9, it is that hit probability differentiation has never been made between low light scenarios and ample-light scenarios. Given the disproportionate number of night shootings, it can be reasonably concluded that diminished lighting has had a substantive influence on the low overall hit probabilities published. However, until this research was undertaken, performance degradation had
never been accurately quantified.
As progressively trained as BCPD officers are for low light conditions, they've still experienced a 30% hit declination from their daylight-hit ratios. Shooting data provided by Los Angeles County Sheriff suggests a 24% decline in hit ratios under low light conditions when compared to daylight conditions. Where and when police hit ratios are seriously examined, a serious departure from training range performance is attributable to low light conditions.
THE BUNCH-SHOOTING PARADOX
So-called bunch-shootings, whereby several officers confront an armed suspect in a given incident, seem to elicit an elevated number of rounds being fired per officer. Until recently, very limited data existed regarding this phenomenon. That early data that did exist suggested that officers firing alone discharged an average of 2.7 rounds, while officers firing in bunches fire an average of 5.9 rounds per officer, per incident. That's a 118% increase in the number of shots fired when officers fire in bunches.
Data recently obtained from Los Angeles County Sheriff (LASD) unearthed some startling new revelations about bunch-shootings. The LASD data represents most of the law enforcement shootings in that county from 1997-2002, excluding those of LAPD. Some surprising patterns began to emerge when this data was analyzed. The LASD data offers us a critical new insight into how bunch-shootings influence officer hit ratios.
The long prevailing assumption has been that officers have generally had a 15-25% hit probability. While the aggregate figures continue to suggest this, the heavy influence of bunch-shootings in the LAC data illustrate a dramatic decline from the average 51% hit ratio when singular officers are involved in a shooting to as low as nine percent when more than two officers participate in a lethal force event. The declination of hit ratios involving singular officer shootings to shootings involving more than two officers is a whopping 82%. Clearly, at least with what data is available, the influence of bunch-shootings far exceeds even that of low light conditions.
Reflect back upon the 1992 Portland statistics previously mentioned, suggesting that bunch-shootings saw the average number of shots fired by police increasing by 118% over the average number of shots fired when officers fired alone. The LAC data suggests that bunch-shootings see as much as a 45% increase in the number of shots fired when more than two officers are involved in a shooting. The old Portland data involved the use of a substantial number of police service revolvers and the early implementation of semi-automatic pistols. The LAC data consists largely of semi-automatic firearms and yet the averages (118% v. 45% increases) differ dramatically.
The 1992 Portland study was based on a relatively small (29) number of incidents and officers (43). The LAC data was culled from 150 shootings, in which 438 officers actively participated as shooters. While the LAC data contained three extreme cases in which 90-201 rounds were fired, the sheer size of the LAC database was able to absorb these aberrations without disproportionately skewing the statistical mean.
Why is such pervasive influence of bunch-shootings affecting the numbers of shots fired by officers, and even more upon their hit ratios? While much more focused research needs to be pursued on this issue, bunch-shootings seem to embody the essence of so-called emotional contagions.
Using the proverbial crowded theater as a hypothetical example, two people smelling smoke in an otherwise empty theater would likely exit the theater briskly but without panic. The emotional synergy of a crowded theater would unleash a very different set of dynamics. This may also be the case in bunch-shootings. Since this contagion theorem would be highly difficult to quantify, the data was closely examined again to look for more discernable and quantifiable variables that might influence bunch-shooting performance.
Many bunch-shootings embody extremely chaotic and complex characteristics. In them are barricaded gunman scenarios, drawn-out foot pursuit and vehicular pursuit scenarios, and scenarios involving heavily armed suspects. Yes, Newhall was a bunch-shooting incident, as was the FBI Miami Shootout, as was the North Hollywood shootout. Hardened career criminals, or those with extreme ideological affiliations, tend to disproportionately confront police in bunch-shooting scenarios. In addition, such confrontations attract police in larger numbers, causing bunch-shootings.
RANGE SCORES/GUNFIGHT EFFICACY
There has long been a degree of controversy regarding whether prowess on the firing range would translate into higher hit ratios in actual gunfights. Very little data is available to elucidate this issue. The 1981 edition of SOP-9 makes this observation:
"An attempt was made to relate an officer's ability to strike a target in a combat situation to his range qualification scores ended with no clear connection. After making over 200 such comparisons, no firm conclusion was reached."
The 1988-1994 Metro-Dade data does shed additional light on the issue, showing slightly higher qualifying scores for those who hit their intended targets in street encounters. However, when held to accepted standards of statistical analysis, the Metro-Dade comparison exhibits no statistical significance between range and street efficacy.
Since most of the shootings examined in this research involved perpetrators who were highly animated when shot at by police, until such time that police handgun qualifications involve naturally and randomly moving targets, and until such time that life-threatening dynamics can be simulated during handgun qualification, direct comparisons are largely senseless. In addition, as much as trainers may wish to pursue this angle to more definitive conclusions, future efforts at quantifying the relationship between range and street efficacy will likely be further complicated because most agencies have adopted pass-fail qualification protocols.
MISTAKE-OF-FACT SHOOTINGS
Until now, all known data pertinent to the frequency in which officers shoot unarmed suspects predates the landmark Tennessee v. Garner case. However, given the frequency in which police engage in low-light lethal force events, the pre-Garner studies deserve serious consideration. The 25-43% frequency in which those studies suggested that police shot unarmed suspects appears dated due to the more restrictive deadly force parameters established by Garner.
However attenuated this phenomenon is since the Garner decision, currently available data suggests that it still persists with alarming frequency. For instance, between 1990 and 2001, the Metro-Dade Police Department reportedly had 22 shootings in which suspects were clearly unarmed, and a dozen others in which the officers claimed they saw guns but no guns were found. All told, Miami officers shot and killed 33 people in that period of years, 11 of which were under questionable circumstances.
The LASD (1998-2002) has provided the most recent quantified glimpse of this phenomenon. Of the LASD incidents (148 total) examined during that period, 27 (18%) were identified as likely mistake-of-fact shootings. Not surprisingly, of that total of MOF shootings, 20 (75%) occurred at a time of day generally associated with reduced light conditions.
Questionable shootings are largely attributable to misidentification of threat level due to impaired visual contrast sensitivity in low levels of ambient light, precipitating suspect behavior, and context-based expectations relative to the nature of the assignment or call. There are training implications embedded in this issue that are numerous and complex. Police training in low light tactics still has a very long way to progress.
Mistake-of-fact shootings may also involve other misleading threat cues. A significant number of shootings took place whereby one or more officers
perceive another officer's stumble and fall as being affirmation that he is under attack. When an officer's fall is in conjunction with an unintentional discharge of his firearm (NYPD's Diallo shooting) it can set off a powerful chain of events.
There is an associative firing impulse where multiple officers encounter what they believe to be an imminent lethal threat. Plausible explanations for these occurrences fall into two categories: officers experience an associative threat assumption phenomenon, as one or more officers conclude that the officer that initiated fire correctly identified an imminent lethal threat; or one or more officers experiences a mistaken origin of fire phenomenon, whereby an officer believes shots being fired by another officer are in fact shots fired by the suspect. This mistake-of-fact occurrence is most common when officers place themselves in a geographical crossfire.
As a result of some of these MOF shooting phenomena, many are also bunch-shootings. Some of the most high profile questionable shootings have embodied both MOF and bunch-shooting characteristics.
Bunch-shootings may also contribute to higher suspect fatality rates. When handgun encounters conclude with a suspect fatality, the number of rounds employed to fell the suspect appear to be high, with the Portland study suggesting an average of 9.3 hits per slain suspect.
(Continued in next post)