7 Delta Shaped UFOs Seen
Henry Clark, manager of a flying service, flying a Piper Clipper at 19,000', saw 7 delta shaped objects.
35' to 55' in span, 20' to 30' long, 2' to 5' thick, light colored except for a 12' diameter dark circle at the rear, center, of each, with a flat top surface and a 2' to 5' high dome, sharp needle nose, flat tail, outer panels oscillated then disappeared.
Objects flew in a tight formation of 2s with 1 behind, and made a perfect, but un-banked, right turn about 1,500' ahead and 500' below with no wake turbulence, displaying decreasing smooth oscillations, then turned right again passing the aircraft at about 450mph to 500 mph.
Clark's engine ran rough during the sighting, and on landing was found with all spark plugs burned out.