U.S., ROK combine for CBRN, EOD training Published Aug. 30, 2023 By Airman 1st Class Chase Verzaal 51st Fighter Wing Public Affairs OSAN AIR BASE, Republic of Korea -- U.S. Air Force Airman William Dobyns, left, and Staff Sgt. David Gogev, 51st Civil Engineer Squadron emergency managers, adjust each other’s individual protective equipment while conducting a buddy check during combined forces chemical, biological, radiological and nuclear training with the 51st CES at Osan Air Base, ROK, Aug. 24, 2023. Dobyns and Gogev processed U.S. and ROK troops through a simulated decontamination line to ensure the safety of members that came into contact with hazardous materials. (U.S. Air Force photo by Airman 1st Class Chase Verzaal)