 By March 2001, NATO forces deployed in and around Kosovo began to interdict rebel supplies from areas under KFOR control, with surveillance carried out by drones.USAF Predators from the 11th Reconnaissance squadron were moved to the Skopje airport and later replaced by Task Force Hunter, a drone unit made up of IAI RQ-5 Hunter unmanned aircraft.A combined ground and aerial mission was assigned to German troops along their sector of the Macedonian-Kosovar border.