Taliban fired a rocket that hit a NATO helicopter carrying the governor of a key southern Afghan province, but no one was injured, officials said. Helmand Gov. Ghulab Mangal and a delegation of British officials were about to land in the provincial town of Musa Qala when an insurgent rocket-propelled grenade struck the CH-47 Chinook helicopter, Mangal told American news agency. The grenade hit the tail end'' of the chopper, said Maj. MartinO'Donnell, a spokesman for NATO's International Security Assistance Force. "There was a minor damage to shaft and the rear blade,' O'Donnell said. The helicopter landed under control'' at a nearby NATO base. Mangal and other officials were to inaugurate a new mosque in Musa Qala, a town that lies in Helmand. The delegation returned to the provincial capital of Lashkar Gahin another helicopter, Mangal said.