An inside look at the secret world of America's elite warriors.

U.S. Navy SEALs go through the intense military training known as Hell Week, a structured world of sacrifice that forces SEAL candidates to the limits of their physical and emotional endurance.

SEALs are capable of responding to situations not worthy of full-scale military action: the rescue of a downed pilot. SEAL snipers attempt to rescue a captured soldier.

Exploring the changing definition of the nature of war and international security, see the latest techniques and equipment SEALs use to respond.

The SEALs use high-speed boats, secret aircraft, desert assault vehicles and even mini submarines to defend and protect.