Staff Sgt. John Douglas, 403rd Aircraft Maintenance Squadron propulsion technician, reinstalls a compressor variable guide vane actuator, which controls air flow to the engine of a WC-130J Super Hercules aircraft, at Keesler Air Force Base, Mississippi, Dec. 19, 2017. The 403rd AMXS maintains the aircraft flown by the 53rd Weather Reconnaissance Squadron “Hurricane Hunters” here. (U.S. Air Force photo by Tech. Sgt. Ryan Labadens)