Staff Sgt. Ryan Elliot, 75th Aircraft Maintenance Unit crew chief, places a dipstick in A-10C Thunderbolt II oil to determine its levels during a joint oil analysis Jan. 9, 2020, at Moody Air Force Base, Georgia. The joint oil analysis program allows maintainers to check for internal failures of aircraft engines through discrepancies in oil. The oil samples are taken from aircraft every day and sent to Nondestructive Inspection Airmen for further evaluation. (U.S. Air Force photo by Airman Megan Estrada)