They’re not small drones—see the footage as they reach the ground. The flat battery hypothesis also feels unlikely because it’s too obvious a failure mode. On

They’re not small drones—see the footage as they reach the ground. The flat battery hypothesis also feels unlikely because it’s too obvious a failure mode. On the other hand, I suppose it’d be possible to have them send the drones up, then get told to delay by a few minutes, and so exceed the planned flight time. But the drones aren’t that high up (much less than 30 seconds of controlled descent), so that doesn’t feel so likely.