Aftermath of U.N. bombing in Baghdad, "Lessons from the Rubble." U.S. soldiers from the 203rd Engineers prepare to comb the site of the explosion for bodies on August 20, 2003 at the Canal Hotel. The previous day, a cement truck packed with explosives detonated outside the offices of the U.N. headquarters in Baghdad, Iraq, killing twenty people and devastating the facility in an unprecedented suicide attack against the world body. At least 100 people were wounded.