** FILE ** U.S. Air Force Gen. Gene Renuart, gestures during a news conference at Central Command Center, Doha, Qatar in this April 10, 2003 file photo. Renuart, the military commander in charge of defending the U.S. homeland said Tuesday, July 24, 2007, that he believes there are al-Qaida cells in the U.S. or people working to create them. (AP Photo/Richard Lewis, File)