Huge cylinder floated across the sky, lit up and then disappeared

2 Friends and I were sitting out on the back deck behind the house which has an open sky to the north and west over the 131 highway. I noticed what I initially thought was a cloud as I looked up casually but it was moving strangely. It had a defined shape and was moving against the wind and direction of the other clouds in the sky. It was solid, light grey in shape and was completely matte. There was no reflection of light from sunset. It was so strange that I pointed to it and said, "Hey, what is that thing?". They turned and saw the same object, headed north. Just floating fast across the sky. It's shape did not change at all, it was a large metallic object like a cigar or a cylinder. My friend said, " Whoa! What the f**k is that?!" and the other friend also exclaimed, " Dude that, uhhhh..." and then the object lit up bright green and began to sporadically shimmer with round green lights all along the bottom quarter of the rounded craft, the rest of my friends sentence was, " uhhhh... Guys it's lighting up!?" and then it turned invisible and the lights remained a moment. and then the lights all dimmed into nothing and it was completely gone. We talked about it and came to the conclusion that we'd just seen a ufo of some kind and we were very excited. About an hour later we were still out on the deck after sunset and about 20 or so white lights started zipping across the sky in all directions, some flashing and pulsing, others traveling together and passing each other. A flash would occur, then a bright light would appear moving from the flash across the sky in a straight line. These lights were brighter than anything else in the sky. And then nothing. It was the strangest and most amazing thing I have ever seen in my life.