U.S. Air Force crew chiefs from the 31st Aircraft Maintenance Squadron lube pivot points underneath an F-16 Fighting Falcon after washing the aircraft, March 17, 2015, at Aviano Air Base, Italy. To assist with crew chiefs’ frequent inspections, Aviano aircraft receive a thorough cleaning using soap, water and lube every 180 days. (U.S. Air Force photo by Senior Airman Matthew Lotz/Released)