Facebook shows off air-to-ground laser progress

A key part of Facebook's ambitious plan to deliver Internet connectivity via drone is an air-to-ground laser link that will connect the high-flying aircraft to the Internet, and on Tuesday, Facebook showed off important progress in that technology.
The company's Connectivity Lab has developed a gimbal that will hang from the underbelly of the Facebook drone and keep the laser system connected to a ground station.
Getting a reliable, high-bandwidth connection to a drone at 80,000 feet is not a t