[defaultname]

The article links a number of other sources. The device was described as a 5 ft x 3 ft quad copter -- standard drone arrangement, but larger. But too small to be manned.

By the contemporary, common use of the word, drone fits. Someone made a large scale version if the story is accurate.

[exporectomy]

Where did you get 5x3 ft quadcopter? I only found an FBI interviewee saying it was 4-6 feet diameter and unknown if it was quad or hex configuration. If they couldn't count the propellers, I wouldn't be confident they saw any propellers at all. Maybe it was fixed wing, for instance.

[defaultname]

https://jetcareers.com/forums/threads/quadcopter.307891/#pos...

I have no idea where that guy got the info but he's presumably in the area/industry there.