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
General Dynamics F-16 Fighting Falcon variants April 2007. In December 2006, the ROKAF placed a second production contract for T-50, T-50B, and TA-50 variants. The development of the FA-50 to replace the remaining old fighters is ongoing . Sources: USAF sheet, International Directory of Military Aircraft, Great Book, F-16 versions on F-16.net General Dynamics F-16 Fighting Falcon variants A large number of variants of the General Dynamics F-16 Fighting Falcon have been produced by General Dynamics, Lockheed Martin, and various licensed manufacturers. The details of the F-16 variants, along with major modification programs and derivative designs significantly influenced by the F-16, are described below. Two single-seat