I think they should take JJ's gun away and give him a taser gun. I do understand that when Theo turned around and still had the scanner in his hand, it could look like a gun and JJ went with his instincts. I just know I wouldn't want to be a policeman in this day and age, we had a big problem not long ago, when officers were chasing a guy with a gun, the guy dropped his gun, leaned down and picked it up, and was shot. People were outraged over that because the guy being chased, didn't have time to draw point
his gun, therefore he was unjustly shot.