Core Points - Amazon is restarting its drone delivery service in Arizona after a temporary suspension due to a crash involving two drones [1][2] - The crash occurred when the drones collided with a crane, prompting investigations by the National Transportation Safety Board and the Federal Aviation Administration [1][2] - Amazon has been delivering packages weighing up to five pounds via its Prime Air service in the West Valley of Phoenix since November 2024 [2] - The company has conducted an internal review and believes there were no issues with the drones or their supporting technology, but has implemented enhanced visual inspections to monitor for obstructions [3] - Amazon's drone delivery program has faced challenges, including executive departures, as it aims to deliver 500 million packages annually by the end of the decade [3] - The company previously halted drone testing after a mid-air collision in Oregon in December 2024, which led to a suspension of operations in College Station, Texas, and Arizona [4] - Amazon received FAA approval in May 2024 to fly delivery drones longer distances, facilitating the expansion of its Prime Air service [6] - Future expansion plans include additional locations in Texas and other cities across the country, such as Detroit and Kansas City [6]