191007-N-N0443-1002 PENSACOLA, Fla. (Oct. 7, 2019) Students in the aviation machinist’s mate maintenance course at Naval Air Technical Training Center (NATTC) prepare to remove the power turbine and drive shaft of a helicopter engine. Students practice safety, tool control, maintenance publication adherence and work documentation through hands-on experience. NATTC graduates about 15,000 Navy, Marine Corps and international students annually and is part of the Center for Naval Aviation Technical Training, which provides single-site management for Navy and Marine Corps aviation technical training. (U.S. Navy photo by Ensign Cody A. Milam/Released)