ufo invasion fleet?

Here's some interesting footage, it appears to be a fleet of UFO's in the sky, I've seen several of these types of videos and they are disturbing and look pretty legit to me. Notice how they move around like somebody or something is piloting them. Are the aliens planning an invasion of earth? What are there true motives? Why have there been so many ufo sightings lately? So many questions, but so few anwsers. I did read someone speculating that these could be ballons reflecting, I highly doubt they are, by the way they move, and it seems that they are generating there own light. Well check out the video and comment and let me know what you think.