Bascom Mall was a crazy construction site:
Somewhere in the background there you might be able to see the Law School
Apparently, Obama will make an entrance through the Education School:
"Please DO NOT Climb Trees."
At the top of the hill, workers — perhaps student volunteers — were assembling into groups under hand-held signs, like this one, which says "Perimeter":
And this one says "Inside Water":
Perhaps that has to do with handing out water to the audience members who are not permitted to bring water (or food).
And here we see a white sheet draped over the windows of Chadbourne Hall (a dorm), which presumably has a view of the place where the President will stand: