See the red 삼각형 that the aeros have placed in the cloud. Notice how the 구름, 클라우드 housing the 삼각형 is much darker than the surrounding clouds. See 더 많이 at www.youtube.com/aerostockians
This is what the quantity of aeros in the skies looked like last night (Mon24Nov08) when the girls and I attempted to capture the airborne Night Circles on video.
