These are remarkable. They’re getting smaller and more sophisticated. Think about this:
A team of Special Forces operators is postured outside a compound in downtown Kandahar. Intel has led them this far; inside the compound is a Taliban commander responsible for numerous civilian and military casualties. It’s unknown who else is inside with him; heavily armed fighters, a suicide bomber, or innocent women and children? One of the operators rips a device the size of a book from a pouch and flicks it open. He takes out a tiny 15 gram nano-UAV, snaps the rotor blade onto the body and throws it in the air. It shoots up and over the mud-brick wall, the onboard camera beaming a clear picture back to the screen in his hands. Unseen it silently zips past four armed guards in front of the main building and enters through an open window. Inside a group of men are holding a shura. The target has been identified! With a crump the team breaches the compound and rapidly overwhelms the security detail. They make a bee-line for the room containing the target. Moments later the dust has settled and the objective is zip-tied, hooded and ready for processing.”
They are made by a Norwegian company, Prox Dynamics. They are shipped in cases of three:
Here is a 2009 video of an earlier and larger version.
They have lots of possibilities.