AS's post, SF instructor...
I'm curious to know why AL Shooter would be around a person so reckless & unstable. This SF veteran may have serious mental health problems.
When I took my 1st armed security course in 2002, my class instructor was a SF(US Army special forces) veteran & PSC(private contractor). The guy was a total nutbar. The mgr of the training course even told our class she was going to get rid of him.
Some people can earn skill badges or work in spec ops but they are not good instructors. That includes entry level students.
I do all my own stunts.