I was just starting into law enforcement when this occurred. Back in the day, everyone had to use the revolvers because the only semi-auto was the 1911 (until the Smith mod 39 came out) and most depts would not allow them to be carried. I do recall the days of qualifications where you were required to police up your own brass. Many did put the empties in their pocket, including me until this incident. I had heard what was then a rumor or misinformation that one of officers had expended brass in their pocket. Until we switched to semi autos, all brass hit the deck from the cylinder.