Mother ship emitting Scout Craft, in sight for about 20 minutes

Working second shift in the cutter shop of Manistee Iron Works, radio station WMTE 1340 of Manistee, mirthfully reported a sighting of a UFO south of town by Canfield Lake, moving toward town at a very slow speed.  Many of us went up on the balcony and opened the windows, to the south of us was a large dark craft, guessing -- it was about 500 feet wide  tip to tip, front to back maybe a 100 feet, there were no lights on the craft, because of the darkness it was very hard to determine a discernable shape, all of a sudden on the tip's of the craft a light came on each tip, shot forward from the mother ship at incredible speed, acceration was as fast or faster than most rockets I have seen, when they reached us both scout ships (as I call them)made a knife edge 90 degree turn to the west and shot out of sight.  Approx 10 minutes later they came back to the mother ship from the north, still very fast, stopped suddenly on the tips of the mother ship, and the lights went out.  We watched the mother ship until it passed overhead, about 20 minutes in all.  Many of the workers punched out of work and follwed in their cars, but not me.
Witness indicates that the date of the incident is approximate.  PD