World's Toughest Test" is back for another season with a new group of celebrity recruits ready to test their limits.

Colombian special forces deal with the country's most dangerous threats, like the illegal cocaine trade. We followed how top soldiers train for deadly secret missions. More from Risky Business ...

The U.S. Department of Defense’s premier Chemical, Biological, Radiological, Nuclear, Explosives (CBRNE) command marked 20 years of countering the world’s most dangerous hazards, Oct. 16.

Afghan commandos accompanied British special forces on some of the most dangerous missions of the conflict. The Ministry of Defence said it was conducting an independent review. When the Taliban ...