Well, a weird experience the last half hour or so. I've been out briefly, and on trying to log on again kept getting messages about DDoS, and unable to load the website. Anyone else get the same? Then suddenly OK again.
Back to the chase. I think the America West 737 must have been on lease to a European carrier, so it's a bit of a red herring.
Neither of the above guesses, but I would not describe it as obscure. There would often be 3-4 BAL aircraft there together.