Edited sentence: 23, 2004, and was rebroadcast in both 2005 and 2006.Actor Charles Durning was nominated for an Emmy for his portrayal of Marine veteran Ernie Yost.Episode 207 of NCIS was a major departure from the program's usual crime-investigating plotlines.The NCIS team proceeds to investigate what really took place during the hellacious combat, never certain whether or not the veteran -- a Medal of Honor winner -- had really committed murder.The episode opens with an elderly Marine veteran walking into the NCIS headquarters building, turning in his service weapon, and confessing to the murder of his closest buddy six decades ago during the bloody battle for Iwo Jima in World War II.The truth is finally revealed in a stunning conclusion, as the NCIS team uses modern technology to recreate the sights and sounds of combat in order to evoke a cathartic reliving of the events by the guilt-stricken veteran.This episode was originally broadcast Nov.Titled "Call of Silence", it revolves entirely around a realistic exploration of post-traumatic stress disorder