At 22 秒 你 will see an aero fly into a green Orb and disappear. Here will learn that they communicate while in flight; because 你 witness the green Orb blinks in preparation for the incoming aero.
See the red 三角形, 三角 that the aeros have placed in the cloud. Notice how the 云, 云计算 housing the 三角形, 三角 is much darker than the surrounding clouds. See 更多 at www.youtube.com/aerostockians