** FILE ** Then-Senate Armed Services Committee Chairman Sen. John Warner, R-Va., right, accompanied by committee member Sen. Carl Levin, D-Mich., left, presides over a hearing on Capitol Hill in Washington in this Sept. 14, 2006 file photo. Warner, 80, said Friday, Aug. 31, 2007, he will not seek a sixth term in 2008. (AP Photo/Dennis Cook, File)