I didn't actually see the guy run out. I'm usually buried in the back heads-down focused, as Bezos would say. But I heard some screaming, turned around, and a woman actually ran after the guy (not her computer!) for four blocks. Finally the guy dropped the computer and she picked it up and showed up 5 minutes later miraculously with his computer. The guy whose computer it was only then came out of the bathroom not knowing his MacBook Air had been stolen!