Boeing Field, E Marginal Way

33) Best I can tell, this is the one mailbox for the entirety of Boeing. Every single piece of mail they send probably gets deposited in this box. This must be one busy mailbox, yessiree. Fortunately, I visited it early in the day on a weekend, otherwise I probably would have been trampled by the constant stream of workers mailing things. If you find yourself on E Marginal Way, be careful.