The first picture was when I was a Spec 4 (E4) in Combat Engineer School. This was one of the days were were blowing shit up with TNT.
The TNT that the National Guard got to use in 1989, was only left over from the Korean War...so we had to double the blasting caps to make sure it blew up. The rust on the case etc made some of the other students worried, so there were only a few of us who kept volunteering to blow up charges all day.
"FIRE IN THE HOLE!!! a few pounds of TNT, 1950's vintage!
Then in the early 1990's, we used to go to Fort Ord, CA to use the weapons ranges. This weekend we'd started out with getting all the ammo belts ready for the machine gun range. That was the first time I was put in charge of a machine gun range. I loved it!
Yep, that is a 1911A1 .45 auto in the holster.
Each course of fire required a specific number of bullets on the belt. They never show this part in the movies.