Mysterious lights over Arizona and Florida

Strange lights flew in formation over Phoenix, Arizona, and St. Augustine, Florida. (Something similar happened in Phoenix in 1997.) These were widely seen and photographed. Here is a story about the Arizona sightings: Unexplained lights spotted above Valley; what were they? Here is a story on the Florida sightings. (The anchors say the lights may be wedding lights, I guess something like balloons.)

Here is a video of what people were seeing in Arizona, so you can see them for yourself:

What do you make of these? (I welcome opinions both serious and humorous.)

UPDATE: We have a confession.