The guided missile cruiser USS Anzio (CG 68), foreground, approaches the replenishment oiler USNS Patuxent (T-AO 201), center, during a replenishment at sea exercise in the Straits of Florida on Sept. 23, 2012. The Anzio and Patuxent are maneuvering with the Colombian navy frigate ARC Antioquia (FM 53) and Mexican offshore patrol vessel ARM Independencia (P-163) as part of multinational naval exercise Unitas Atlantic 2012. The exercise is designed to enhance security cooperation and improve coalition operations between South American and U.S. maritime forces.