U.S. Marine Corps Staff Sgt. Christian Lalama, with 23rd Marine Regiment, 4th Marine Division, in support of Special Purpose Marine Air-Ground Task Force UNITAS LXIV, gives a period of instruction on communication systems in preparation for exercise UNITAS LXIV, aboard Escuela de Formación de Infantería Marina Coveñas in Coveñas, Colombia, July 11, 2023. UNITAS, taking place in Colombia this year, is the world’s longest-running annual multinational maritime exercise that focuses on enhancing interoperability among multiple nations and joint forces during littoral and amphibious operations in order to build on existing regional partnerships and create new enduring relationships that promote peace, stability, and prosperity in the U.S. Southern Command’s area of responsibility. (U.S. Marine Corps photo by Sgt. Emily Kirk)