Perhaps nothing so aptly epitomized the chaos of Lebanon for Americans last week as the fate of the body of the young man, said by the hijackers to be a U.S. Marine, who had been murdered on Flight 847. After lying on the tarmac for two hours, the body, with a bullet wound in the head, had been taken by an International Red Cross ambulance to a morgue at the American University Hospital in Muslim West Beirut. U.S. officials, based on the other side of the "green line" in Christian-dominated East Beirut, were unable to retrieve it for 24 hours. Not until Sunday morning did a State Department spokesman announce that the body was at last on its way to a U.S. air base in Spain for identification. Used first as proof of the hijackers' resolve, the stranded corpse had thus become a symbol of the obstacles and divisions that afflict the terrorists' homeland. The hijacking ordeal ended with the escape of the Shi'ite terrorists and the release of the remaining hostages.