Slideshow: Brace yourselves, commercial drones are coming

Nightingale Security is a San Francisco based company that specializes in the use of drones for facility surveillance. The drones are fully autonomous, with a 4 km operational radius, and are capable of carrying a number of sensors including infrared, thermal, and hazmat. Nightingale Security offers the drones as a monthly or annual service, including installation and maintenance of all hardware and software.