It has been a nagging concern for years how U.S. Law Enforcement Officers on the scene react to a civilian being shot by one of their own.
Time after time, they stand around the wounded victim, wrapped up in their standard operating procedures, and none of them attempt to offer first aid or allow any others who claim medical expertise to 'contaminate the crime scene' by offering assistance.
If a victim is alive, that 15' before EMS arrive can be critical to their survival.