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