It operates as a stun gun that is activated with a remote control. Tom Mabe made as a bait for phone thieves and once they steal it, he triggers the electroshock.
Falcon 9 rocket had just shot 200km up into space and flown almost horizontal to the planet at six times the speed of sound, before falling back to Earth. Then, somehow, it landed like a feather on a robotic barge in the ocean. The Falcon even found time to put an inflatable space habitat into orbit, too. [arstechnica]