http://dronesurvivalguide.org/
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FYI, the Shadow, although small, sounds like a freaking lawnmower flying over your head. And it has a sensor onboard that detects when you're trying to sleep after rucking up and down mountains all day and flys directly over you at what seems like about 2.5'.
Here is all I have to say about that...
Attachment 38779
missed one: http://en.wikipedia.org/wiki/Boeing_X-37
;)
My first thought when I saw this was the duck shadow/outline pictures in the hunting manual. It helps identify what you are shooting at.