Editor’s note: U.S. Central Command said two U.S. troops and one U.S. civilian were killed in the attack, in addition to three service members being injured. Find an updated story here . Shots were fired at Syrian and U.S. forces on Saturday during a visit by American troops to a historic central town, leaving several wounded, Syria’s state media and a war monitor said. The shooting took place near Palmyra, according to the state-run SANA news agency, which said two members of Syria’s security