Memorial Day weekend is synonymous with Ferry Beach for the Calabria’s. Each year we travel to Maine for a Unitarian Universalist church retreat with members of Concord’s and Lexington’s First Parish congregations. My favorite iRobot benefit is a summer hours program allowing folks who have already worked 40 hours to take off at noon on Fridays. I used this option to get a head start on the two-hour drive avoiding the otherwise brutal traffic. After the sunset, I put a recently acquired camera through its paces as I photographed Maya and her friends playing with glow sticks in near-total darkness.