At 22 секунды Ты will see an aero fly into a green Orb and disappear. Here will learn that they communicate while in flight; because Ты witness the green Orb blinks in preparation for the incoming aero.
See the red треугольник that the aeros have placed in the cloud. Notice how the облако housing the треугольник is much darker than the surrounding clouds. See еще at www.youtube.com/aerostockians