ARLINGTON, VA - MAY 19:  Former U.S. Secretary of Defense Donald Rumsfeld attends the dedication ceremony of the new Humanitarian Corridor at the Pentagon May 19, 2009 in Arlington, Virginia. The corridor exhibited 27 dioramas that commemorate significant historical joint service humanitarian efforts that U.S. military has participated around the world. Getty Images logo Getty Images 33 months ago

ARLINGTON, VA - MAY 19: Former U.S. Secretary of Defense Donald Rumsfeld attends the dedication ceremony of the new Humanitarian Corridor at the Pentagon May 19, 2009 in Arlington, Virginia. The corridor exhibited 27 dioramas that commemorate significant historical joint service humanitarian efforts that U.S. military has participated around the world.