11:00 p.m. 30 miles SW of Wonsan, USAF crew of B-29 flying at above 20,000' ft and 170 mph ground speed saw an orange luminous rotating and pulsating 3' sphere or disk, with blue flame halo, follow the B-29 at a distance of about 600' at the 8 o'clock position advancing forward to 9 o'clock then falling back to 8 o'clock, at one point almost withdrawing from view then returning.
Object seen for one minute.
At 11:24 p.m. local time, members of another B-29 crew observed an identical object near Sunchon, Korea. Object seen for five minutes
The observers stated that they had never seen any similar objects before.