Senior Airman Donald Anderson, 8th Maintenance Squadron aircraft fuels systems specialist, dons his personal protective equipment during a simulated F-16 Fighting Falcon hydrazine leak at Kunsan Air Base, Republic of Korea, Nov. 4, 2021. The aircraft fuels systems specialists wear PPE resistant to the hazardous material that is extremely reactive and explosive to oxidizing agents and metals. (U.S. Air Force photo by Staff Sgt. Mya M. Crosby)