923rd AMXS
Staff Sgt. Savannah Lopez, 923rd Aircraft Maintenance Squadron electronic and environmental journeyman, changes a defroster plug on an HH-60G Pave Hawk tail rotor at Davis-Monthan Air Force Base, Ariz., Oct. 18, 2013. The defrosters are designed to keep the rotor blades fromdeveloping ice, which can be hazardous during flight. (U.S. Air Force photo by Betty R. Chevalier/Released)