Another Google Earth mystery

Several weeks ago, I was at my workplace casually browsing Google Earth, as I often do. As is usually the case, I was looking at American Air Force bases.
At one of these, there were parked a couple of 707-derivatives, and beside them, a similarly-sized black equilateral triangular object. Obviously I assumed that it was some kind of portable structure for maintenance or whatever, that just co-incidentally looked like one of the mythical "Black Triangles".
Days later, I thought that it would be fun to get a screen-cap of the location, and post it here for discussion. Here lies the problem - I never "flagged" the site, and now I can't find it anywhere! I've been methodically searching all of the USAF bases, including Groom Lake, Palmdale and any other of the more secretive areas that I can think of...

Has anyone else here found it? I'm pretty sure that it was just an innocent tent, but there's just this little nagging in the back of my mind that's driving me nuts!

Never seen that for sure... i'd remember it.


But you know the world is a very big place (for us atleast).