recruits screaming] Narrator: This is the confidence course at the Marine Corps Recruit Depot ... Drill instructor: Get down! More from Boot Camp ...

What happens when a world-class gymnast takes on a brutal US Marine obstacle course? We brought in Katelyn Ohashi, former UCLA gymnast and viral floor routine sensation, to see how her gymnastics ...

After four years in the Army, Nicolas Brooklier wasn't sure what to do next. Brooklier, who had served as a transportation and logistics officer and attained the rank of captain, mulled getting ...

Narrator: This Marine Corps recruit isn't actually injured ... Narrator: It's part of their final test at boot camp, known as the Crucible, a 54-hour event that all recruits must complete.