No offence but there's something creepy about that photo. 
That was a year ago.
The kids much creepier now.
Taking safety into account, the robot had the batteries removed, the CO2 tank removed, and if you look, you'll see the linkage attaching the pneumatic ram to the flipper arm is not theaded into its clevis.
Oh, and I'm standing about 2' behind him, just out of frame.
