KEEP OUT! Either someone has something to protect, or it's dangerous in there. Challenge the world's best safecracker to defeat a bank vault, and see the methods a bank uses to protect its money and tellers. Travel to New Mexico to find out how the government plans to keep people away from a nuclear waste site for the next 10,000 years. Tour Master Lock to see how padlocks and combination locks are made. See how facial recognition, irises, and even vein structure "unlock" biometric locks. With Customs and Border Protection, see how officers stop illegal aliens and contraband from entering the U.S. Finally, see how cages and other deterrents tell sharks to KEEP OUT!