This undated photo provided by the U.S. Air Force, shows technicians working on the AEHF-1 satellite at the Lockheed Martin facility in Sunnyvale, Calif. The AEHF-1 was launched in August 2010 and Air Force ground controllers executed a delicate rescue to save the $1.7 billion military communications satellite that was stranded in the wrong orbit and at risk of blowing up _ all possibly because a piece of cloth had been left in a critical fuel line during manufacture. (AP Photo/U.S. Air Force)