Staff Sgt. Jeremy Caudillo spars with Russell Biggs, mixed martial arts general manager and trainer, at a local MMA gym in Bossier City, La., Dec. 12, 2012. Caudillo, with the 2nd Force Support Squadron at Barksdale Air Force Base, La., started competing in local amateur MMA fights after his deployment to Afghanistan. Over the years Caudillo learned kick boxing, Jiu-Jitsu and Muay Thai along with various strength and endurance exercises. (U.S. Air Force photo/Senior Airman Micaiah Anthony)