3 questions
Question 1:I was exploring the Museum of Technology and as I was reading some of the signs, I noticed that America was reffered to as the "USSA." Does anybody know what that does or could stand for?

Question 2:After the battle with the behemoth in the GNR plaza, one of the surviving BOS knights said somthing like, "That'll give the boys at Lost Hill something to think about." Any idea what the Lost Hill is?

There may already be a post on these, but i didn't know where to look.

any answers would be appreciated

United States Space Administration, the Fallout equivalent of NASA

http://fallout.wikia.com/wiki/Lost_Hills, the BoS base from Fallout 1, which the DC Brotherhood has something of a schism with.