 Two episodes, "The Man from MI.5" and "Attack of the Alligators!",  feature the full Thunderbird 4 launch sequence shown from inside Pod  4. In other episodes featuring Thunderbird 4, we have only seen  Thunderbird 4 emerging down the ramp from outside the pod door. "The  Man from MI.5" is the only episode in which Thunderbird 2 gently  rests the pod on the surface of the water and then rises clear of  the pod with lifting jets, whereas "Attack of the Alligators" shows  Thunderbird 2 lifting from the pod several minutes after landing.  Normally, the pod is simply dropped on to the water.