MARIETTA, Ga., Aug. 1 (UPI) -- Lockheed Martin announced Tuesday it has won a new $5 billion order from the U.S. Air Force to build 60 more F-22 Raptor fighters. The total value of the company's contract with the USAF is now worth $7.3 billion. The aircraft will be built through 2011 "at a rate of 20 per year, with deliveries starting in late 2008," Lockheed Martin said in a statement. "The multi-year contract allows us to generate savings for the taxpayer and continue to deliver the most capable aircraft in the world to the men and women defending our...