U.S. Army Reserve Soldier assigned to the 1st Mission Support Command, preparing tactical vehicles for a convoy during Caribbean Thunder 25 Situational Training Exercise (STX) lanes in Camp Santiago, Salinas, Puerto Rico, Aug 4, 2025. Puerto Rico and the US Virgin Islands hold the only training areas within U.S. Army Reserve control where units can practice contested inter-island operations, transportation, logistics, and communications. (U.S. Army Reserve photo by Sgt. Edrik Torres)