Summary Friday marked one year since 13-year-old Mason Kearns was swept away by flood waters and into a storm drain at his Mount Airy apartment complex. MOUNT AIRY, Md. — Friday marked one year since 13-year-old Mason Kearns was swept away by flood waters and into a storm drain at his Mount Airy apartment complex. “Following last year’s tragedy, the Town completed an inventory of all storm drainage inlets throughout Mount Airy. The trash racks are currently in production, and installation will begin once they are received.