A U.S. soldier shot and killed an Afghan guard at a base, apparently because the American thought the guard was about to attack him. (rssfeeds.usatoday.com)

An American soldier shot and killed an Afghan guard at a base in the country's north, apparently because the American thought the guard was about to attack him, Afghan police said Sunday. (www.newsvine.com)

Afghan officials say an American soldier has shot and killed an Afghan guard at a base in the country's north, apparently because the American thought his Afghan colleague was about to attack him. (www.newsvine.com)