Senior Master Sgt. Daniel Chase, the Integrated Defense Leadership Course chief assigned to the 310th Security Forces Squadron, Schriever Space Force Base, Colorado, observes a safety briefing prior to using a live grenade on May 31, 2023, at Camp James A. Garfield Joint Military Training Center, Ohio. In order to teach combat readiness skills to future Defenders attending the course, Chase and fellow IDLC cadre had to be certified on using grenades. (U.S. Air Force photo by Staff Sgt. Christina Russo)