KABUL (Reuters) - A second American soldier missing in Afghanistan after a special forces helicopter was shot down last week has been located, a provincial governor said Monday. The governor of Kunar province, where a team of U.S. troops went missing last Tuesday, said Afghan forces received information that a wounded American was being treated by villagers in a remote mountainous part of the province. The soldier was in the same area as that where a U.S. helicopter sent to rescue troops operating there was shot down on Tuesday, killing all 16 U.S. Special Forces soldiers aboard. U.S. military spokesmen...