Well done OSGEOINT!

They spotted something under the covers! Posted by George Kaplan it might be an unknown Lockheed Martin UAS sat under the sheet. It would seem unlikely that something to exciting would be left in view.

Measurements taken from imagery suggests the craft is roughly the same size as the RQ-170 at 4.8 meters while the wingspan is considerably larger–when compared to open source estimates–at 16.60 meters.