RETALHULEU, Guatemala— A UH-1N Huey helicopter and aircrew from Marine Light Attack Helicopter Squadron 467 takes off from the flight line at Santa Elena, Petén 'Base Aérea del Sur', (Air Force Base South). Four UH-1N Huey helicopter crews and aircraft form HMLA-467 are part of Detachment Martillo of U.S. Marine Corps Forces, South and are participating in Operation Martillo. The detachment conducted a Mission Rehearsal Exercise prior to operations beginning in Guatemala. Detachment Martillo, under operational control of U.S. Marine Corps Forces, South, is comprised of a number of units from II Marine Expeditionary Force. Operation Martillo is an operation led by Joint-Interagency Task Force-South, of the U.S. Southern Command, and is designed to help stem the flow of narcotics through Central America and its Pacific and Caribbean coasts by denying transnational criminal organizations littorals used for illicit trafficking. (Official U.S. Marine Corps photo//Released)