Interference With America's GPS System 'Has Grown Dramatically'

86 aircraft were affected by an incident in Denver ,and 256 more in Dallas-Fort Worth, America's Federal Aviation Admistrationtold the Washington Post:The pilots flying into Denver International Airport could tell something was wrong. In urgent calls to air traffic controllers, they reported that the Global Positioning System was going haywire, forcing them to rely on backup navigation systems for more than a day. The Federal Aviation Administration issued a warning to air traffic in the area. E