Black Hornet

[Dimlee]

The operator evaluates the Black Hornet micro-drones used by the Armed Forces

https://mil.in.ua/en/news/the-operator-evaluates-the-black-hornet-micro-drones-used-by-the-armed-forces/

"We flew in windy weather 10 meters from the group of soldiers and no one noticed us. The copter is extremely quiet!"

 

[Zipper730]

I could imagine they would be, they're quite small.