U.S. Space Force Maj Sallie Duncan, Joint Overhead Persistent Infrared Center Subject Matter Expert provides support to the Missile Warning Delta 4 crews during the SPACE FLAG 22-2 exercise. She provided assistance with taskings of the Overhead Persistent Infrared Sensors to provide realistic Missile Warning training during SPACE FLAG 22-2 execution. (U.S. Space Force photo by Ms. Judi Tomich)