busy with other UCAV work. Raytheon proposed a sixth option, whereby they would offer a combination of sensors, communications systems, and other mission-related systems as a package, and then choose an airframe at a later date. Raytheon's perspective was that, as long as it performs to a minimum set of specifications, the individual airframe is less important than the systems it will carry. The Air Force wanted to field the Hunter-Killer by 2007 and may order up to 60 machines. The program seems focused to avoid "gold plate", and most of the avionics will likely be off-the-shelf. References "New Concepts Have Emerged for USAF Unmanned Hunter-Killer Aircraft." Aviation Week & Space Technology. September 19, 2004. Unmanned military aircraft of the United States