Some were purposefully striding around the sprawling campus, cameras at the ready, as if hoping to recapture something behind a bush, in a culvert, under a tree, down a corridor or around a corner. Some wore the smug, almost beatific, I-have-arrived look. Others had their faces, after the fifth or so uncertain encounter, kind of permanently screwed in a quizzical “I recognize you but can’t place you. Can you jog my memory?” routine.