NTSB, FAA to probe crashes of two Amazon delivery drones in Arizona

By David Shepardson WASHINGTON (Reuters) -The U.S. National Transportation Safety Board and Federal Aviation Administration said on Thursday they would investigate the collisions of two Amazon Prime Air delivery drones with the boom of a crane in Tolleson, Arizona, a day earlier. Amazon began drone deliveries in the Phoenix metro area's West Valley from its same-day site in Tolleson in November