U.S. Air Force Lt. Gen. Kenneth Wilsbach, 7th AF commander, speaks with Master Sgt. Layne Mayerstein, 51st Civil Engineer Squadron explosive ordnance disposal flight chief, during an immersion tour at Osan Air Base, Republic of Korea, Jan. 11, 2019. Mayerstein spoke about the EOD side of Rapid Airfield Damage Repair, including methods of dealing with unexploded explosive ordnance on the flightline. (U.S. Air Force photo by Senior Airman Kelsey Tucker)