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A longer-range flight clearance is government authorization permitting delivery drones to operate beyond the distance limits that previous aviation rules set.
Amazon received one, and the company has since been quietly expanding its drone delivery service into more metro areas.
The expansion is now targeting nearly 500 cities, with Amazon aiming to complete 1 million drone deliveries this year.
What the clearance means in practice Drone delivery, at its base, is a service that uses unmanned aircraft to drop packages at a customer's address instead of routing them through a ground delivery driver.
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