Despite the green light for small businesses to begin experimenting with their own drone delivery programs, corporate behemoths such as Google, Walmart, and Amazon are still heavily restricted from blotting out American skies with swarms of robots. With most of the others’ details left in the dark, Amazon has been more vocal about its own drone delivery program as it begins testing in the United Kingdom where regulations aren’t nearly as stringent. Though we can’t say for certain, the unveiling...