Probably staged, but...

About ten years ago I went nuts and dove deeply into RC helicopters*. This meant I spent an unusually large amount of time staring at the sky. Probably 3 out of 4 times I went out to practice I'd see a brace of balloons float by. And back then I was going out at least once a day on week days and a couple of times a day on the weekends. It was weird.

So, yeah, probably staged. But there's a definitely a chance they got blown in there.

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*For about two years, then I switched to writing. Changing one form of mental illness for another is a habit.