A BQM-74E Chukar aerial drone launches from the flight deck of the guided missile frigate USS Thach (FFG 43) to simulate an incoming missile during a live-fire exercise for the Pacific phase of Unitas 52 off the coast of Chile July 1, 2011. Ships from Chile, Colombia, Peru and the U.S. participated in the exercise. Unitas, Latin for “unity,” is an annual USSOUTHCOM-sponsored, multinational naval exercise designed to enhance security cooperation and improve coalition operations between South American and U.S. maritime forces. (DoD photo by Mass Communication Specialist 3rd Class Stuart Phillips, U.S. Navy/Released)