A small crowd of people at the Plimoth Grist Mill recite excitedly in unison, “One, two three: Water on!” One of the millers and a group of visitors are starting the water wheel at the same site where the Pilgrims built the first American grist mill in 1636. The replica mill, operated by Plimouth Plantation, works not only as an exhibit but also as a modern-day production facility. Kim Van Wormer and Matt Tavares are the millers.