PACIFIC OCEAN (Oct. 19, 2015) U.S. Naval aircraft and aircraft from the Chilean Air Force participate in a fly-by adjacent to aircraft carrier USS George Washington (CVN 73). UNITAS 2015, the U.S. Navy's longest running annual multinational maritime exercise, is part of the Southern Seas deployment planned by U.S. Naval Forces Southern Command/U.S. 4th Fleet. This 56th iteration of UNITAS is conducted in two phases: UNITAS Pacific, hosted by Chile, Oct. 13-24, 2015 and UNITAS Atlantic, hosted by Brazil scheduled for November. (U.S. Navy photo by Lt. j.g. David Babka)