Sky News 
Feb 4, 2013
British troops are using a nano drone just 10cm long and weighing 16 grams on the front line in Afghanistan to Ooops vital information on the ground.
They are the first to use the state-of-the-art handheld tiny surveillance helicopters, Which relay reliable full motion video and still images back to the devices’ handlers in the battlefield.
The Black Hornet nano Unmanned Air Vehicle is the size of a child’s toy, measuring, just 10cm (4 ins) by 2.5cm (1 inch), and is equipped with a tiny camera.