We never solved this one but we did finally post on the main page after getting a few notes/tweets/questions about it. Definitely wasn’t news, though it was similarly sized and had a camera on the nose. Not Guardian One, either. There’s a disaster drill tomorrow – might have been prep for that – or not. We have had the occasional aerial photography sighting, though – I remember one mysterious nighttime chopper in The Junction that turned out to be doing infrared work!