President Barack Obama knocks on the door before entering a soldier’s room at Walter Reed Army Medical Center in Washington, D.C., Aug. 30, 2010. The President met with 24 wounded warriors who served in Afghanistan, five who served in Iraq, and honored 11 soldiers with the Purple Heart.

President Barack Obama knocks on the door before entering a soldier's room at Walter Reed Army Medical Center in Washington, D.C., Aug. 30, 2010. The President met with 24 wounded warriors who served in Afghanistan, five who served in Iraq, and honored 11 soldiers with the Purple Heart.