51st CES conducts Rapid Osan Airfield Recovery training
A U.S. Air Force Airman, assigned to the 51st Civil Engineer Squadron, dumps rocks into a crater during Rapid Osan Airfield Recovery training at Osan Air Base, Republic of Korea, Feb. 26, 2026. Airmen placed flowable fill concrete over compacted crushed stone as part of Osan’s ROAR concept, designed to rapidly generate aircraft launch capability. (U.S. Air Force photo by Senior Airman Rome Bowermaster)