The RK-RLDN datalink is for communication with ground control centers. The airfield is managed by three ground control towers. All 11 satellites successfully checked in with ground control stations. Ferguson with the help of Ground Control later transferred the failed GPC's programs onto GPC-2. A Blackjack system is composed of five air vehicles and two ground control systems. The ground control is done by radio. The ship can be operated automatically, or by a pilot independently of ground control. The British victory resulted from more concentration, better radar, and better ground control. The entire mission would be controlled by either automatic systems or by ground control. He tested space flight equipment, developed space operations methods, and participated in ground control operations. Sax played a supporting character in the 1998 movie "Ground Control". The three systems can be controlled from a Saab common ground control station. It includes elements such as ground control stations, data links and other support equipment. The height was rigidly adhered to since it could not be checked by ground control. It was controlled by a new ground control system meant to integrate dissimilar UAV systems.