Wired:

The best Super Bowl halftime shows leave indelible memories, be it a notorious wardrobe malfunction, that goofy Left Shark, or every last second of Beyoncé’s two appearances. It’s too soon to say whether anything Lady Gaga did tonight will resonate, but at least she offered something new: An army of dancing drones, ducking and dodging over the Houston skyline, transforming from stars to a fluttering flag.

It’s probably the first time you’ve seen 300 drones flying in formation, but it’s almost certainly not the last.

I’d heard rumors of this and was interested to see how they would pull it off. Looks like it went really well.