Dragonfly or Insect Spy? Scientists at Work on Robobugs.
By Rick Weiss
Washington Post Staff Writer
Tuesday, October 9, 2007; Page A03
Vanessa Alarcon saw them while working at an antiwar rally in Lafayette Square last month.
"I heard someone say, 'Oh my god, look at those,' " the college senior from New York recalled. "I look up and I'm like, 'What the hell is that?' They looked kind of like dragonflies or little helicopters. But I mean, those are not insects."

more on this here : http://www.washingtonpost.com/wp-dyn/content/article/2007/10/08/AR2007100801434.html?nav=hcmodule
This is just creepy