The training methods designed in a way that will facilitate the execution of the correct sequential execution, will promote response with approach that will have the best tactical solution as well.
Getting out of the line of fire: Well if it is faster to kill the attacker then move away from the barrel with your whole body you leave it to the sniper. Before you get out from the line of fire you might want to consider if it is faster to move the line of fire away from you.
Barrel is Pointed to the Side of the Head Opponent is Behind!
Not a Good Idea When Barrel is Pointed to the Forehead!
Self Study and Learning Aides: