260521-F-NT235-1306
U.S. Air Force Staff Sgt. Cheyenne Stiff 52nd Security Forces Squadron base defense operation controller, deployed from the 628th SFS at Joint Base Charleston, escorts Staff Sgt. Gabriel Mateo, assigned to the 52nd Logistic Readiness Squadron, during a mock active shooter exercise at Spangdahlem Air Base, Germany, June 1, 2026. Mateo acted as a suspect during the Threat Enhanced Emergency Readiness Exercise scenario. (U.S. Air Force photo by Airman 1st Class Kacie Ramos)