GBU-12 Paveway II of the Paveway series) are produced by defense contractors Lockheed Martin and Raytheon. Raytheon began production after purchasing the product line from Texas Instruments. Lockheed Martin was awarded a contract to compete with Raytheon when there was a break in production caused by transferring manufacturing out of Texas. "Paveway II" refers specifically to the guidance kit, rather than to the weapon itself. See also GBU-16 Paveway II, where the same guidance unit is fitted to a Mk 83 1,000-lb bomb. The US Department of Defense has upgraded GBU-12 production versions to include GPS guidance modes. Lockheed Martin is the sole
Lockheed Martin CATBird Lockheed Martin CATBird The Lockheed Martin CATBird is a highly modified Boeing 737-330 designed as an avionics flight testbed aircraft. The name is an adaptive acronym, from "Cooperative Avionics Test Bed"; coincidentally, "CATBIRD" is Lockheed's ICAO-designated company callsign. The aircraft was modified in order to provide an economic means of developing and flight testing the avionics suite for the Lockheed Martin F-35 Lightning II. CATBird has a distinctive appearance, with an F-35's nose and a pair of small canards located just aft of the forward entrance doors. Inside, the aircraft is equipped with racks to hold all of F-35's avionics,