High Quality Content by WIKIPEDIA articles! The Boeing Insitu ScanEagle is a small, low-cost, long-endurance unmanned aerial vehicle (UAV) built by Insitu, a subsidiary of Boeing. The ScanEagle was designed by Insitu based on the Insitu SeaScan, a commercial UAV that helped fishermen look for fish. The ScanEagle continues to be upgraded with improved technology and reliability.