​Lockheed Martin Corporation (NYSE:LMT) is one of the Undervalued Aerospace Stocks to Buy Now. On September 16, Lockheed Martin Corporation (NYSE:LMT) announced an upgrade to South Korea’s F-16 Block 52 flight simulators. The upgrade is based on the advanced capabilities of the upgraded F-16 Viper aircraft. ​Management noted that the contract spans six years; in this time, the company will upgrade nine simulators at Seosan and Chungju Air Bases. The simulators will be upgraded to match the F-16V configura ...