Sen. Mark Kelly, D-Ariz., speaks during a hearing of a Senate Armed Services Committee subcommittee. A combat veteran, Kelly called on the U.S. Marines to explain why wounded troops weren't told the truth about a friendly fire incident in Iraq in 2004. Alex Brandon/AP hide caption

Taking Cover: An NPR Investigation
NPR's investigation of a cover up: a "friendly fire" incident involving U.S. Marines.A photo album of Shihab — during his time as an interpreter working with American military personnel during the Iraq War — rests on a small table alongside cups of tea. Claire Harbage/NPR hide caption
U.S. Marine Corps Lance Cpls. Chris Covington (left) and Carlos Gomez Perez recover from shrapnel and bullet wounds on April 27, 2004, after Iraqi insurgents attacked near Fallujah, Iraq. Just two weeks earlier, Covington and Gomez Perez helped evacuate wounded Marines and soldiers after a deadly explosion rocked a schoolhouse in Fallujah. Scott Peterson/Getty Images hide caption