I'm guessing heli or plane to satellite is hard because of the movement requiring tracking of satellites. The intermediate heli and plane are probably to ensure

I'm guessing heli or plane to satellite is hard because of the movement requiring tracking of satellites. The intermediate heli and plane are probably to ensure you keep LOS. With the trucks. The third heli I'm guessing is either for boosting the signal (putting the heavy equipment on a heli that does less extreme maneuvering) or perhaps for ensuring LOS between the cameras and plane. Then the two trucks are simply relay points for the satellite.