One of the tools that I have used over 45 years of riding motorcyles on the street is called SIPDE. Search your environment. Interpret what you see as it relates to your safety. Predict what could happen at any point in the here and now. Decide what you will do in response to your interpretation and predictions. Execute your response. I never fastened a helmet over my head without telling myself that today could be the day that I die.
SIPDE applies to everything you do in this world. Not considering the possibility of a Black Swan Event could prove fatal.
What I would like to see, and maybe it is already available, are training programs for your spouse and kids. Not to have them go into a fight, but trained to be situationally aware at all times and be prepared to react. Know where the exits are. Respond without question to commands given them by the trained person responding to the threat. Observe what is happening and get out of the way and find cover or escape as fast as possible. For the kids old enough to comprehend training, learn how to call 911. Learn basic first response skills - as an event has unfolded and now the response has transitioned from a reaction to violence to a reaction to injury the non-combatants should know and be aware of the need to find and provide material that can be used for compression to deal with bleeding wounds, prop up lower extremities to deal with shock and covering for warmth. Not that I would expect an 8 year old to provide treatment, but they can be trained to provide support should the need arise. My stepkids used to fall asleep whenever we drove anywhere. My Grandkids observe where the car is going, and pay attention to their surroundings at a much higher level than their parents did at that age. Still a work in progress, but worth the effort to keep them engaged in what is going on around them.