Don't you guys know there's a bunch of folks in Mexico who compete to see who can create the best UFO fakes? Looks like a train of tethered balloons to me. Interesting how the photographer could get a clear, steady, in-focus image of a passing airplane, but couldn't get the UFO in focus. I call hoax.
Or maybe it's the government releasing the latest, most virulent H1N1 strain.
I am one person who would like to believe in ufos. I just don't see any credible evidence. These so-called "moving spheres" are not doing anything I would expect an intelligent visitor to do. Surely to God if a being was able to travel light years to get here, he/she/it wouldn't put on a stupid airshow after arriving.