Flying saucer covering 25 miles in 15 seconds — Southern Wisconsin, July-August 1947

Four witnesses in two separate aircraft in southern Wisconsin observed a flying saucer that covered 25 miles in 15 seconds in the first sighting (equivalent to approximately 6,000 mph) and 22 miles in 20 seconds in a second observation. The object executed a vertical ascent through clouds, stopped at approximately 4,000 ft, resumed horizontal flight, stopped again, and disappeared. No propulsion, sound, or exhaust was noted. The speeds calculated from the witness data far exceed any known 1947 aircraft.

“Four witnesses in two aircraft observed object covering 25 miles in 15 seconds (first sighting) and 22 miles in 20 seconds (second); object made vertical ascent through clouds, stopped at 4,000 ft, resumed horizontal flight, stopped again, then disappeared.”

Four witnesses in two aircraft provide cross-corroboration. Calculated speed of approximately 6,000 mph in 1947 exceeds any known aircraft by a factor of 6-8x. Object's ability to stop and restart at reported speeds would imply extreme acceleration by known physics. This is among the most aerodynamically anomalous incidents in the batch. Confidence moderate due to second-hand FBI summary and OCR quality; no radar confirmation.