This is the music they'll be playing as flocks of them blacken the skies on the hunt for rogue members of ignoble humankind who refuse to submit to their mechanical regime.
You fools! First it's the James Bond theme. Then it's Parliament. THEN it's Klaus Nomi! Don't you know where this will lead? CAN'T YOU SEE? CAN'T YOU SEE?
Over a thousand years from now, I think this will become a tradition among the flying robots. They'll perform this every year around this date. They'll feel compelled to do it, they'll celebrate it as part of the "Death To Humans" festival, and yet they won't know why they do it.
The curious hacker can look at the maths and implementation:
http://www.isrr-2011.org/ISRR-2011/Program_files/Papers/Turpin -ISRR-2011.pdf
Looks like all the proprietary work by the group is in MATLAB. These quads and their motion capture system are commercially available: www.asctec.de www.vicon.com