Multiple ufos in formation sightedAs i was looking around on the roof of a 9 floored building I noticed a number of objects moving across the sky above me, each one trailing another in the form a giant caterpillar. They had a yellow glow and had a haze around them. After crossing 3/4 of the sky they formed a "V," and 4-5 seconds later, they again formed a caterpillar shape and then faded. They were moving and manoeuvring too fast for any human made craft I had ever seen. But they didn't make any sound. They seemed to be flying very high.