The Navy’s MQ-4C Triton has completed its first phase of flight testing that proves out its ability to fly at various speeds and altitudes, bringing the aircraft closer to beginning payload testing later this year, the service said. Testing of the first Triton aircraft, which is a variant of the Air Force’s Global Hawk, began in May and was completed March 13, according to the Navy and manufacturer Northrop Grumman [NOC]. The MQ-4C flew a total of 81 hours, reached…