I believe FEMA is the US Federal Emergency Management Administration, and is the one primarily "in charge of" many abuses, although there doesn't really seem to be anyone responsible for for much of anything. Their orginal purpose was to respond to natural disasters and the like, but they think disasters within their jurisdiction include "terrorist actions." Of course the FBI, ATF (recently renamed ATFE?), CIA, NSA, TSA, NHTSA and the like all disagree with them, and of course each disagrees with each and every one of the others. (We are so well-protected that most of us fear our protectors more than we worry about the "enemies.")

The convenience of using the acronyms is because once you've "sort of heard of them" you "sort of know who they are" but hardly anyone, least of all those manipulating (the term "managing" doesn't apply) the systems, can actually remember the "full official titles" that go with them.

John