There's a rock on SLU's campus that is the sole "property" of
Parks Guard which is a drill team based out of the college of Aviation and Engineering, and though the website sort of seperates itself from the Air Force, it was portrayed to me as almost a fraternity with the Air Force ROTC on campus.
Anyway, their "pledges" or whatever were in charge of painting the rock and changed freqently. Its default was a MIA flag. The best story is that someone came and painted over it several days in a row, someone outside of PG. The PG guys were out there every night redoing it.