F-16 fighter jet fuels systems maintenance
U.S. Air Force Tech. Sgt. Brad Steward, left, and Senior Airman Chapman Rogers, 169th Aircraft Maintenance Squadron fuels systems technicians, troubleshoot an F-16 fighter jet mechanical issue at McEntire Joint National Guard Base, South Carolina, March 23, 2021. (U.S. Air National Guard photo by Senior Airman Mackenzie Bacalzo, 169th Fighter Wing Public Affairs)