On any given day, except during the coldest winter months, the evening hours in Clarendon Heights are filled with activity. At one end of the housing development, elderly women sit on wooden benches and chat. In the center of the project, children play street hockey, kickball, stickball, or football, depending on the season. At the other end, teenage boys congregate in the stairwell and on the landing of one of the entries—doorway #13.