The three-year program was undertaken by Northrop Grumman at a contract cost of $410 million, and focused on the basic design of the radar system. Phase II is a six-year, $888 million contract awarded by the Air Force's Electronic Systems Center in May, 2004, under which the radar system is being developed, tested and integrated.
Northrop Grumman's three-year program aimed to create a solid foundation for the radar system. The subsequent Phase II project, spanning six years and worth $888 million, builds upon this initial work by further developing, testing, and integrating the radar system into a comprehensive whole.