3/16/2006 - TYNDALL AIR FORCE BASE, Fla. (AFPN) -- This was the final test. An underwater compass and a buddy harnessed three feet from their bodies provide direction. A 25-pound breathing device strapped to their chests provides vital oxygen while underwater without making surface bubbles. A 50-pound rucksack and weapon weighted on their backs are the tools they’ll need to infiltrate the beach when they get there. These teams of two kick underwater in murky water more than 2,000 yards to reach the shore. They have to hit a precise, targeted objective there without being spotted by anyone on boat...