Afghanistan, March 2002. In the early morning darkness on a frigid mountaintop, a U.S. soldier is stranded, alone, surrounded by fanatical al Qaeda fighters. For the man's fellow Navy SEALs, and for waiting teams of Army Rangers, there was only one rule now: leave no one behind...
Their mission was straightforward - to set up an Al Qaeda observation post in the south-eastern mountains of Afghanistan. No-one was expecting any difficulties.