Have a read of this article also, it graphs the flight paths of these helicopters: https://www.flightradar24.com/blog/how-the-tour-de-france-goes-from-cycle-to

Have a read of this article also, it graphs the flight paths of these helicopters: https://www.flightradar24.com/blog/how-the-tour-de-france-goes-from-cycle-to-screen/ https://www.flightradar24.com/blog/how-the-tour-de-france-go...