USAF pilot and crew of RB-29 bomber in the 373rd Recon Squadron based at Kindley AFB, Bermuda, on classified Atomic Detection System service, was searching for a lost BOAC aircraft.
At 1,500' and at 200 mph saw to the left, in the N, a red glow on the ocean 1 to 1½ miles in size extending up to 4,000' to 6,000' altitude with 2 to 4 white searchlight like beams of light within the red glow.
At 12:25 a.m. B-29 turned toward the light and by 12:40 a.m. approached so close, at estimated 100' to 150' distance at 6,000' altitude, that pilot made a sharp bank to avoid collision. B-29 crew unable to take nuclear fallout sample of air around red glow because in haste to take off on search mission they failed to bring filter paper.
B-29 circled the red glow from all directions for 44 mins as the glow slowly moved, at about 10 mph headed W, when they finally departed the area at 1:24 a.m. Red glow still visible on landing in Bermuda at about 2:10 a.m.