HIGHWOOD SHORE FIELD NOTE ========================= Late summer. Warm black water. Tree frogs behind the houses. A pontoon somewhere past the dark. A television flickering through a window. 23:48 western clouds reflect light from above. 23:52 FM receivers lose stereo separation. 23:53 a narrow silver object crosses the cloud base without appearing to move between positions. Nobody on the pontoon reports seeing it. The dog does.