Well, it certainly wasn’t like we were doing it as a relaxing vacation activity. :D
None of us on that roof or in that building really wanted to be there let alone play sentinel. We would all much rather have had the police deal with it all and have none of the chaos happen. That didn’t happen, sooo... You do what you have to. And as I said earlier, the police being completely absent made the calculation of what to do immensely easier.
My AP English teacher *really* didn’t like what I wrote for my “How I Spent My Summer” essay later that year.