(Source: unmannedsystemstechnology.com) Drone Aviation Holding Corp., a developer of specialized lighter-than-air aerostats and tethered drones, has announced that its wholly-owned subsidiary, Drone Aviation Corp. (DAC), has officially launched WATT, the company’s first model of a new line of commercial-grade electric tethered drones. Designed to provide secure and … [Read more...] about Drone Aviation Announces New Industrial Electric Tethered Drone