back in the late 50's when i did the FBI tour our local friends told us to take the last tour and they let people fire guns on the indoor range where they fired the Tommy gun.i think the guys who did the tour then were real agents and one showed us how to grab a pistol so the hammer would come down on the web of your thumb to block it..just a kid i said that would hurt,his response,better than getting shot.it was one of those "moments" when the real world hits you...i can tell i'm getting old,i can recall that but not where i left my keys------