Sentry North Exercise
From left, U.S. Air Force Master Sgt. Francisco Ortiz, cyber defense operation craftsman, and Senior Master Sgt. Raul Iglesias, cyber operations superintendent, both with the 156th Contingency Response Group, Puerto Rico Air National Guard, assemble a Lite Coms 1.3 meter satellite during exercise Sentry North at Alpena Combat Readiness Training Center, Michigan, May 31, 2025. Sentry North 2025 focused on operating in a contested environment with adversary aircraft, electronic jamming, and simulated surface-to-air threats, providing a premier joint training opportunity ensuring participating units are combat-ready and interoperable in operationally limited environments. (U.S. Air National Guard photo by Master Sgt. Rafael D. Rosa)