What is this thing that looks like a small dragon fly flying around outside a NASA lab?
UAV: Unmanned Aerial Vehicles
If you are wandering around Pakistan look up.
If you are watering your crop of.... anything.
Some of these vehicles fly on hydrogen.
Some of these fly on solar cells and batteries.
Some use plain old JP.
Some are small and some are as large as a 767.
(Don't this look like that WWII German jet?)
Some are controlled by the guy a few blocks from them. Some are controlled 16,000 miles away. Some are controlled by an autonomous computer in Maryland.
Some fly for a couple hours. Some can fly on station for years.
Some just see you. Some kill you outright. Some tag you to be killed. Some just follow you around till the guys that want you get there. Some just relay your cell phone calls.