It's a good choice of hardware - functioning bladeguards. You won't see people injured from these. Unless they stick a finger in the blades.

I still find it creepy to be stalked by flying machines at events. The camera bends towards you, the engines whine louder, and over it comes, tracking you like a predator. The glassy emotionless eyeball. The hackles of my neck stood up as long as I could hear that thing over my shoulder.

I suspect its deep in my gene pool, this reaction.

You've heard me say this before; I suppose I'm just rewarning you for when you first encounter a crowdstalking eyeball.