In the ultimate search for a Human Weapon, mixed martial artist Jason Chambers and football pro Bill Duff put their bodies on the line as they train in the most lethal forms of combat, before going toe to toe with masters of each fighting style.

In Military Combat, Jason and Bill train in Krav Maga, the renowned Israel Defense Forces form developed after the formation of the Israeli state in 1948. They also learn the history and techniques of the formidable U.S. Marine Corps Martial Arts Program (MCMAP), a 21st Century fusion of fighting styles that have been adjusted to best suite soldiers clad in equipment including helmets and flak jackets, armed with knives and M-16s.

After intense training, our hosts put their Krav Maga and MCMAP skills to the test against masters from the disciplines. Are they up to the challenge?