The Navy unmanned aircraft shot down by Iran was a 2011 legacy Global Hawk transferred from the Air Force, not one of the Navy's new MQ-4C Triton aircraft derived from the Global Hawk design but optimized for maritime missions. U.S. Central Command spokesman Capt. Bill Urban said in a statement today that an Iranian surface-to-air missile shot down a Navy aircraft, describing the vehicle using nomenclature for an Air Force intelligence, surveillance and reconnaissance platform. "U.S. Central Command can confirm...