Spiny Norman said:

The record for the most multirotors/drones airborne simultaneously from a single computer (outdoors) is 22,580, achieved by Guangdong EHang Egret Media Technology Co., Ltd. in Hefei, Anhui, China, on 3 February 2026. This astonishing feat showcases the incredible precision, coordination, and technological advancement in modern drone operations.

https://www.youtube.com/watch?v=i1ho1-JBBmw

Pretty darn spectacular. I much prefer these displays over fireworks.

…and one bloke with a poorly-insulated electric razor could have brought the whole thing crashing down.