WASHINGTON, Rabi'I 25, 1437, January 05, 2016, SPA -- The one U.S. trooper killed and two wounded in Afghanistan's southern Helmand province were accompanying Afghan special operations forces when they came under fire, Pentagon spokesman Peter Cook said on Tuesday, according to Reuters. There may still be U.S. troops in the area engaging with enemy forces, Cook said, adding that some Afghan forces were also wounded in the attack. Two U.S. medical evacuation helicopters were sent to provide assistance, Cook said. One was waved off after taking fire and returned to its base. The second landed but struck a wall and damaged its rotor blades, and remains on the ground, Cook said. -- SPA 03:21 LOCAL TIME 00:21 GMT www.spa.gov.sa/w