April 2008, Northrop Grumman received the BAMS contract worth $1.16 billion. Lockheed Martin filed a formal protest with the U.S. Government Accountability Office (GAO) two weeks later. On 11 August 2008 the GAO ruled to uphold the Navy's selection of Northrop Grumman. In September 2010, the BAMS aircraft was designated the MQ-4C. Initial development Official unveiling took place on 14 June 2012 at Palmdale, California. During the event, it was announced that the Navy had approved the name "Triton" for the aircraft. The first flight of the MQ-4C by aircraft Bureau Number (BuNo) 168457 occurred 22 May 2013, followed by subsequent test flights at Edwards AFB, California and NAS Patuxent River, Maryland. Initial Operational Capability (IOC) was planned for December 2015 but slipped to 2017. The U.S. Navy plans a fleet of 68 MQ-4Cs and 117 P-8As to replace the aging P-3C Orion force. Approximately 40 MQ-4Cs will be based at various sites, predominantly home stations or overseas deployment sites for Navy P-8A and P-3C aircraft. This includes an unspecified location in Hawaii (most likely MCAS Kaneohe Bay); NAS Jacksonville, Florida; Kadena Air Base, Japan; NAS Point Mugu, California, and NAS Sigonella, Italy. The Air Force Times reported on 14 September 2012, that the system will also be stationed at Andersen Air Force Base, Guam. In August 2013, the Navy paused the development of the "sense and avoid" radar system that would enable the MQ-4C to avoid other aircraft. The Triton would have been the first unmanned aircraft to be fitted with such a system, but the system was behind schedule and over budget. The radar system remains a requirement in the program, but budgetary and technology pressures have forced the Navy to defer integrating it onto the aircraft. The Navy and Northrop Grumman are working to determine when the sense-and-avoid system can be included into the production line. The Navy restarted the competition for a sense-and-avoid radar for the Triton in November 2014 with less ambitious requirements, including the ability to use data from ground radars as it approaches an airport, and a modular and scalable design that can be incrementally improved to meet evolving future operational and air traffic management requirements. On 6 September 2013, the Navy awarded Northrop Grumman a $9.98 million contract for maintenance and support of the MQ-4C SDD aircraft to enable it to fly 15 missions per month, an increase from 9 per month