More than 80 active-duty and Reserve Citizen Airmen participated in training designed to enhance members' confidence in wearing the gas mask and protective gear during chemical, biological, ...

Narrator: And must negotiate 15 obstacles, which test them both physically and mentally, requiring a combination of focus, coordination, and, of course, confidence ...

We got an inside look at how United States Marine Corps recruits train on a challenging "confidence course" during boot camp. Senior video correspondent Graham Flanagan spent five days at the Marine ...