After watching this quadrotor drone making the craziest maneuvers I can imagine, I only have three thoughts. One, robotic extermination is inevitable. Two, I want one for next Christmas. Three, send a weaponized squadron to fight the mole men here.

The quadrotor Unmanned Aerial Vehicle was made by Daniel Mellinger, Dr. Nathan Michael, and Dr. Vijay Kumar at the GRASP Lab, University of Pennsylvania. [DIYDrones]