Airmen from the 321st Special Tactics Squadron grapple with each other Jan. 11, 2013 at RAF Mildenhall, England. The 321st STS Airmen receive this training regularly to keep their current skills sharp. Additionally, the course trains the operators on different techniques which can both save their lives and effectively diffuse potentially risky situations. (U.S. Air Force photo by Tech. Sgt. Stacia Zachary/Released)