U.S. Marines Corps 1st Lt. David Powell, an assault amphibian vehicle commander with 4th Amphibious Assault Battalion, 4th Marine Division, guards the perimeter of a UH-1Y Venom landing zone during riverine operations training on the Río Sinú during UNITAS LXIV near Base de Entrenamiento de Infantería de Marina in Coveñas, Colombia, July 14, 2023. Through event-driven scenarios, UNITAS provides unique training opportunities both at sea and ashore in challenging and uncertain environments to conduct joint maritime operations through the execution of surface, air, amphibious and electronic warfare operations that enhance warfighting proficiency and increase interoperability among participating naval and marine forces. (U.S. Marine Corps photo by Sgt. Juan Carpanzano)