U.S. Army Puerto Rico National Guard Sgt. 1st Class Jose Santiago a combat medic specialist, observes U.S. Army Reserve Soldiers from the 1st Mission Support Command during Caribbean Thunder 25 Situational Training Exercise (STX) lanes in Camp Santiago, Salinas, Puerto Rico, Aug 4, 2025. Caribbean Thunder is an annual exercise designed to train and prepare units for supporting Large-Scale Combat Operations (LSCO), enhance its warfighting readiness, and ability to respond to crisis or conflict. (U.S. Army Reserve photo by Sgt. Edrik Torres)