An American soldier was fatally injured when a Humvee vehicle rolled over in Afghanistan, while another was slightly hurt by a bomb, the military said Thursday. The Humvee accidentally overturned during a routine security patrol Wednesday evening in Paktika province, a military statement said. The second soldier, hurt when a homemade bomb hit a U.S. convoy patrolling near Asadabad in eastern Kunar province, was treated and returned to duty, the military said.