Meet the 83 men of Class 234 who have been accepted into BUDS, the training program that forms the Navy SEALs, one of the most elite fighting forces in the world.
The MythBusters head to a California mine to test an ancient Chinese military myth - a subterranean sonar system that could allegedly detect and intercept an invasion from below.
Adam and Jamie prepare to unleash the full MythBusters arsenal of weapons - pistols, shotguns, supersonic rifles and the ferocious, .50-calibre - in order to find out exactly how far underwater you have to swim to survive a gunshot from the surface.