In my job, I came in contact with all our branches of service, plus that of a few other countries. At DaNang, our bomb dump was right across a narrow road from the marine bomb dump and a couple of miles off base. They put it off the main base, so if it blew up, they'd just lose some dumb cops and not their valuable people. I was ranking security man at the bomb dump on our shift , so I'd spend a lot of time at the ECP (entry control point). The marine ECP was right across the road from us, so I'd sometimes chat with them. I read a joke story once about the marines. There is 100 of them going on a mission. The commander is briefing them and says probably 99 of you will die. All 100 marines are thinking, "those other 99 poor b@stards are going to die." From my chats with them, there's a lot of truth in that story.