File photo of then U.S. Army Gen. Petraeus and U.S. Marine Lt. Gen. Allen in the East Room of the White House

 
File photo of then U.S. Army Gen. Petraeus and U.S. Marine Lt. Gen. Allen in the East Room of the White House
Then U.S. Army Gen. David Petraeus (L) and U.S. Marine Lt. Gen. John Allen stand together in the East Room of the White House during U.S. President Barack Obama's announcement that then CIA Director Leon Panetta would be nominated as Secretary of Defense in this April 28, 2011 file photo. REUTERS/Larry Downing