U.S. Army Sgt. Jason Thompson, left, and Lt. Col. Nate Flegler, right, wave to one of the last Stryker armored vehicles to leave Iraq as it crosses the border into Kuwait at the Khabari border crossing, Thursday, Aug. 19, 2010. The U.S. Army's 4th Brigade, 2nd Infantry Division is the last combat brigade to leave Iraq as part of the drawdown of U.S. forces. (AP Photo/ Maya Alleruzzo)