Earlier, last fall, I found racoon prints in some sause that was spilled in this highly secure 6 floor bunker building. The trash cans are constantly being tossed and everyone blames the seagulls. Today I saw the culprit reveled himself, it was a very large, fat racoon. He saw me coming at 4am and ran. Dude was on the third floor of the inner courtyard. If the building was actually secure he wouldn't have been able to just run into a stairwell.