EL SEGUNDO, CAlif. --   U.S. Air Force Maj. Steve Lewis from the Headquarters Reserve National Security Space Institute, center, and Capt. Paul Rogers, Air Force Space Command Advanced Space Operations School, left, speak to a U.S. Army Warfighter about developing advanced training for conducting Navigation Warfare operations in contested, degraded and operationally-limited (CDO) domains. The RNSSI and ASOPS, both located at the Moorman Space Education and Training Center at Peterson Air Force Base in Colorado Springs, Colo., provides support to the warfighter through the research, development and world-class instruction of space system technologies, capabilities, operational concepts, acquisitions and tactics in support of joint service strategies to develop certified space professionals across the Department of Defense. (U.S. Air Force photo by Tech. Sgt. Sarah Corrice/Released)