This lesson sort of piggy-backs off of lesson 45. Always consider the wisdom of going into a building or room after a bad guy. Is it necessary? Is anybody going to be in danger if you DON’T go inside? And even in you absolutely have to go inside do you have to go into the room the BG is in to deal with the threat?
While everybody likes to fantasize about being the “door kicker” who throws a NFDD into a room and makes a macho dynamic entry with his laser tracing about through the smoke, many times you never have to enter the room at all.
If you know that the room is a small one, many times the last thing you want to do is squeeze inside of it with a BG who has a gun and a bad attitude. Train to deal with threats from the door.