First Lt. Moritz Wienke, 35th Fighter Squadron pilot, performs a preflight check while outfitted in chemical, biological, radiological and nuclear protective equipment at Kunsan Air Base, South Korea, Jan. 13, 2023. Pacific Air Forces sent a validation team to Kunsan AB in the first step of a PACAF-wide Next Generation Aircrew Protection program update. (U.S. Air Force photo by Staff Sgt. Isaiah J. Soliz)