Sen. Carl Levin of Michigan (right), chats with Lt. Col. Dean Dunham, deputy commander of the 2nd Infantry Brigade Combat Team, 2nd Infantry Division, during a visit to the Al Madain Joint Security Station in the Zafaraniyah section of eastern Baghdad Aug. 18. Levin, along with Virginia Sen. John Warner, visited leaders of the 2nd Battalion, 17th Field Artillery Regiment and the 4th Brigade, 1st Iraqi Division to get a first-hand account of how the surge is progressing. (U.S. Army photo by Staff Sgt. W. Wayne Marlow, 2nd IBCT, 2nd Inf. Div. Public Affairs) Sen. John Warner of Virginia...