USAF scraps plans to replace U-2 with Northrop Global Hawk drone

USAF scraps plans to replace U-2 with Northrop Global Hawk drone: The US Air Force (USAF) has decided to scrap its plans to replace the Cold War-era U-2 spy planes with Northrop Grumman-built Block 30 high-altitude RQ-4 Global Hawk unmanned surveillance planes, a government official and a defence analyst have revea…