Support WBURAfter Leading Two Wars, Petraeus Retires From ArmyPlay03:24Download AudioRachel MartinAugust 31, 2011 ShareDeputy Defense Secretary William Lynn (left) presents Gen. David Petraeus with an American flag at his retirement ceremony after 37 years in the Army, in Arlington, Va., on Wednesday. Petraeus will now lead the CIA. (AFP/Getty Images)
