S.E.R.E. (Survive Evade Resist Escape) is an intense top-secret US
military training program created by the USAF in which soldiers are left in an undisclosed area, without support.
They must first survive the crash using 'survival'
techniques.
Then they evade the hostiles that come to inspect the crash,
When they get captured, they must resist the torture/interrigation,
And finally, they must escape
the area.