There were Rampart like facilities where the ammo buildings stood. I think they are blast walls. I was there in 75 and there were a bunch of the buildings sitting in the center of three sided Blast walls. They were arranged in semicircles with the opening facing the out, so if one building went up its blast wouldn't effect the other ones. Similar to this [_] The buildings had ramps and overhead tracks to load and unload munitions. I never go to the underground facilities if there were any.
The airforce used to park aircraft in positions with blast walls for protection. Just another option.
The training rifle is a Long Branch version of the Swift Training Rifle.
That's all I can add.