May 19, 1952; 30 miles SW of San Angelo, TX
8:05 [7:46?] p.m. (CST). USAF 31st Strategic Recon Sq pilot and crew of
RB36 flying at 18,000 ft on a 301° heading at 214 mph TAS,
Capt. Gerard A. Sharrock, Capt. Jack L. Bailey, Capt. Bernice O.
Bowers, 1st Lt. Constantine G. Kollinzas, 2nd Lt. Norman V. Stewart,
S/Sgt. John J. Fisher, S/Sgt. William O. Warr, A/1c Robert Schick, saw
7 bright white circular or doughnut shaped white contrails, like
lenticular clouds, stacked vertically about 10°-20° elevation
estimated distance 50-75 miles height ranging from 25,000 to 60,000 ft
about 1 mile wide. Sighted through 6x binoculars and photographed in 6
frames with 35 mm camera by Bailey, also seen by radar station ground
observer alerted by radio. Contrails persisted for at least 1520
mins possibly 1 hr. Last seen when RB-36 was at 30°53' N,
101°20' W. (Jan Aldrich)