Everyone should remember that the Washington Post is owned by Jeff Bezos while reading this article. Even the title is propagandistic in style "...can fly safely over U.S. skies"
The whole article seems like it was written by Amazon PR. In addition to that not really counting as journalism, there really ought to be a disclaimer disclosing to the casual reader that the owner of the Washington Post also owns 19% of Amazon and is its CEO/Founder/Chairman/President.
And what does it mean to "fly over US skies"? The drones are flying over cities, not skies. The article might get different response if it read "Amazon details its plan for how drones can fly safely over your children's school!" :)