THE ATLANTIC  As flying robots proliferate, there’s a growing risk of accident or attack. And the U.S. is still a long way from being prepared.

Aeromexico Flight 773 from Guadalajara was just about to land last week when crew members heard a “pretty loud bang,” according to a cabin recording. A mysterious aerial incident had left the nose of the passenger jet badly mangled. By the time it landed safely in Tijuana, there was no confirmed culprit but one likely suspect: a drone.