Navy SEAL unit Mobile 4 does not exist. The U.S. military does not acknowledge them. The White House has never heard of them. And no one who has ever seen them in action has lived to tell about them... Lt. Robert Getts heads a combat team of hard-edged raw recruits from the best of the armed services that will launch a search-and-destroy mission that will pit his SEAL team against the most remorseless killer the world has ever seen...