How to use "installations" in a sentence

Evans been given, any material relating to military research installations in the Sierra Nevada Mountains?

"In case you didn't know it, since the Cold War ended and California took such a big hit in the defense downsizing, Nevada has more Pentagon-supported industries and installations than any state in the union

Chilled, Tina said, "But how much could the kids have seen? You're the one who said security was easy to maintain when one of these installations is located in the wilderness

hidden installations..