170825-N-GO179-005 PENSACOLA, Fla. (Aug. 25, 2017) Aviation Structural Mechanic 1st Class Brad Powell, an instructor at the Aviation Structural Mechanic 'A' school at Naval Air Technical Training Center (NATTC), leads students in a group physical training session at Naval Air Station Pensacola, Fla. NATTC provides aviation maintenance training to more than 15,000 Navy, Marine Corps and international students annually. (U.S. Navy photo by Ensign Clara Navarro/Released)