Families of 694th Air and Space Operations Center walk through an underground hallway during a tour of the ISRG and Korean Combined Operations and Intelligence Center on Osan Air Base, Nov. 16, 2018. The tour began with an overview of the intelligence mission, and included a tour of air-filtration equipment, decontamination procedures, as well as briefings about intelligence operations involving U.S. partnerships with South Korean intelligence experts. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)