Genuinely curious about this - I'm over in Oxfordshire so obviously wasn't there to see it myself, but I've been following a few reports coming out of Arizona this week and the triangular formation keeps cropping up.
What I want to ask is, did any of you actually manage to get footage, and if so have you tried running it through any kind of analysis software? I know a lot of these sightings get written off because the video quality is poor but even a rough track of the movement pattern would be useful.
Also wondering whether anyone has checked if there were military exercises scheduled in that area that night. Not saying thats the explanation, just that its usually worth ruling out before jumping to conclusions. The Goldwater Range isn't that far from Phoenix and they do some fairly unusual stuff out there from what I understand.
Was the formation stationary or moving? That detail seems to get left out of a lot of these reports and it makes a big difference to how you'd interpret what people actually saw.