It’s summertime and Rochester has the jazz festival, outdoor weddings, sidewalk cafes, and pool parties planned. It also has gathering clouds that deliver, unplanned. How do people cope with the changes that have to be made on a moment’s notice? Everything has to be as portable as pie. Perhaps there are crews who drill during the good weather so as to be prepared when the rain comes. Maybe there’s a lookout who squints at the sky, a bald man who feels the first drops before other more hairy folk. Somehow, the party gets shifted indoors, the bride shakes the water from her lace train, and the band plays on.