Gulf War Vet, Teen-Ager Held in Sniper Case By Mark Wilkinson ROCKVILLE, Md. (Reuters) - A Gulf War (news - web sites) veteran and a teen-ager were arrested on Thursday in the sniper case that has terrorized the Washington area, as investigators fanned out across the country to search for evidence. Government sources identified the men as former U.S. soldier John Allen Muhammad, who served in the 1991 Gulf War, and John Lee Malvo, 17. Media reports said Malvo was Muhammad's stepson. The two were not immediately charged in the sniper case, although Muhammad was charged with violating U.S. gun...