International Launch Services said it received authorization from the U.S. Air Force to begin operations for the launch of a national security payload on an Atlas 5 vehicle in mid-2007 from Cape Canaveral, FL. The mission will use the “401” configuration, with a 4-meter payload fairing, an Atlas Common Core Booster with no solid rocket motors and a single engine Centaur upper stage. The company said details about the payload are classified.