That guy, (Gunny)R. Lee Ermey, was in the Marine Corps for eleven years, served 1.5 tours in Vietnam...really brings a bit of the old "fear" back into a former marine...memories
I guess when you've once gone through Marine Boot Camp, you never forget it.
I was in the Navy, we went over to Marine Boot Camp for rifle (M1) training, it was fun.
Be Well - Be Armed - Be Safe - Molon Labe!