In a letter to the Department of Transportation today, Delta Air Lines and US Airways said they are dropping a plan to swap slots at LaGuardia Airport in New York and Reagan National Airport in Washington, D.C.
US Air Force footage of the secret X-37B space plane landing at Vandenberg Air Force Base, Calif., on June 16, 2012 at 5:48 AM local time. The plane's mission has not been disclosed.