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In this file photo, a U.S. Air Force F-22 Raptor from 94th Fighter Squadron Langley Air Force Base, Va., takes off to perform an aerial demonstration for an estimated 180,000 spectators at the Australian International Airshow, March 2, 2013, at Avalon Airport in Geelong, Australia. The Australian International Airshow 2013 (AIA13) is held biennially, and is one of the largest international trade shows in the Pacific. U.S. Pacific Command (USPACOM) participation in AIA13 directly supports theater engagement goals and objectives and further enhances relationships with other Pacific nations.