Farhad Manjoo describes what a team at the University of Pennsylvania is doing with autonomous drones – the team calls them quadrotors – I Love You, Killer Robots
The drones are very small, autonomous and extremely nimble. They can determine location of nearby drones.
Check out the drones as they fly through windows at various angles:
[youtube=http://www.youtube.com/watch?feature=player_profilepage&v=MvRTALJp8DM]