This is not factual at all.
When a Walmart truck leaves a distribution center, the trailer is car sealed closed. The drive is given where he is to go first. He does not know what is in the trailer, guns or toilet paper or electronics.
He backs up to the unloading dock at his first stop and goes into the store where he turns over his paper work. He remains in the store the entire time while what needs to be removed from the trailer is removed. The trailer is again car sealed closed. The driver is given his next destination on where to go, he never knows his route in advance of leaving the distribution center.
Repeat the process again and again until he has completed his route and the trailer is empty.
So how did the guy get a gun with his name on it? The guys unloading the truck do not know what is in the truck until inside the building.
Walmart has a good program in place, how did your buddy bust the system, Walmart would like to hear from you and him.