Neck breaking speed + sudden change of trajectory at "right angle" or close to it
From there it can only be laser show, and if it's not... Then that's something quite odd to say the least
The video above could be drones or "sky lanterns" or "laser show", while I admit the light source seems quite powerful https://youtu.be/sz3YWLJkTcU?t=70
(post is archived)