the 2014 prototype looks like it has 2 "erection pumps" on the top of it. Also the transmitter they use during the water scene looks like the old style low frequency RC transmitters with the pull out antenna, maybe so the signal can penetrate the water? I don't think that would work from very far away though.
I'm actually friends with one of the members of their engineering team. They are currently in Dubai demonstrating their product: The UAE Drones for Good Award