A co-worker of mine is going to the inauguration next week, and so we were looking at an article about the preparations DC is making for the crowds. Apparently there is going to be one port-a-potty per thousand expected attendants. Assuming that each visitor needs to use the restroom twice over a twelve hour period, a occupant must "do their business" in 21.58 seconds to keep things on schedule. Inauguration is no time for number twos it seems.