Axon Enterprise, Inc.
A maker of public-safety technology, Axon builds the TASER devices, body-worn cameras, and cloud evidence software used by police and law-enforcement agencies. It began in 1993, when brothers Rick and Tom Smith launched TASER International in Arizona after a friend was killed in a road-rage shooting. Fun fact: "TASER" comes from the 1911 sci-fi novel Tom Swift and His Electric Rifle, which inspired inventor Jack Cover's original device.