S.E.R.E.
It stands for Survive, Evade, Resist, and Escape.
Few in civilian life know much about it because of the intense nature of what it is. Stories have surfaced as to what others experienced in undergoing it, but even these are few as those who do persevere it are expected to not release the details of what happens.
The description as best I could decipher is akin to being caught behind enemy lines. Your objective is to survive for periods without the basics. You are to do so for as long as possible by not being captured (hence the "evade" phase.) When captured you are to react as though those who hold you are in fact the enemy, and as they do things like waterboard you, break fingers, etc., you are to rely upon all your ability as an honorable member of the defense forces of the United States to resist, not give up your information, nor of your mission. The more you resist the more those who run the program are encouraged to hurt you to tempt you to break. The only major caveat they are asked to observe is not to break any major bones.
Comforting.
At some point in the two weeks you are given a chance to plot an escape, attempt that escape, and you likely will be caught and punished for doing it.
The entire point of the exercise is to wear you down, to wear you out, and to test your ability to survive under literally the worst possible circumstances.
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