A BQM-74E aerial drone launches from the flight deck of guided-missle frigate USS Thach to simulate an incoming missile during a live-fire exercise for the Pacific phase of UNITAS 52 while the ship is under way in the Pacific Ocean, July 1, 2011.

Ships from Chile, Colombia and Peru also participated as part of Southern Seas 2011

U.S. Navy photo by Petty Officer 3rd Class Stuart Phillips