Guys-
I learned a little from each security instructor I had.
Instructor #1 was a retired US Army Major, who had taught soldiers to use the 1911 .45 and M-16. He warned us not to make a student angry, because a trainee had once turned on him and emptied a magazine of .223 on rock 'n roll. The instructor saw it coming and flattened himself out on his elevated concrete platform as bullets chewed at the concrete.
The same instructor cautioned us to keep the muzzle pointed downrange, recounting how a Colonel once turned around with a .45, pointing it in the instructor's face and muttering, " It jammed ". It turned out that the Colonel was not pressing hard enough on the trigger.
This man warned against the tendency to make the front sight wander right and left, deciding that the next time it comes around, it is gonna go : a sure way to jerk the trigger.
If a shooter was not putting enough holes in the target, this instructor would help him by, without warning, reaching over the student's shoulder and firing six shots into the student's target. " Looks like you need some more holes in there ", he'd comment.
Instructor #2 was Arif Mosrie of Associated Security Training in Maryland. He is a retired police Captain with three wins in three gunfights. Mosrie said that in most cases, replacing the revolver with the high-capacity 9mm had only given the police more rounds to miss with.
Mosrie once held a gun in the air and lectured, " This is not a 'problem solver '. This is a 'problem causer ", leading in to an examination of the legal troubles that follow the use of deadly force.
Instructor #3 was Mosrie's partner, now deceased, Bill Merritt, also a retired police Captain. Merritt taught tactics. He told the story a jewelry store robbery, to which he responded. As he drove toward the store, Merritt saw a store security guard running toward him. He pulled over and the guard excitedly yelled, " They went that way ! ".
Merritt then noticed that the guard, who had been chasing three armed robbers had no gun. The guard simply had not realized the risk he was taking.
Merritt addressed the guard, " You ain't got a gun ! What you gon' do if you catch 'em ? "
The guard turned pale.
Those are three that I learned from...