USAF 345th Bomber Squadron Captain/B-29 navigator saw a bluish cylinder, 3x long as wide, with a tail and rapid pulsations, come in high and fast, make several turns and level out under B-29 which was evading mild antiaircraft fire.

Project Grudge Assessment:

I. DESCRIPTION OF INCIDENT

On the night of 24 February 1952, at 2315 local Korean time, the navigator of a B-29 observed an unidentified aerial object. The B-29 was picked up by searchlights and about 45 seconds later the navigator sighted an object approaching from 7 o'clock. The object was estimated to be over Antung at this time. The object appeared to be cylindrical in shape and had a rapidly pulsating gaseous type of exhaust trail. The exhaust trail was approximately three times the length of the object with both the tail blast and the object bluish in color.

When first observed the object appeared to be climbing at 45°, however, it leveled off approximately 4,000 ft. from the B-29 and turned toward the B-29 as if-taking up an interception-course. The object continued to close on the B-29 at high velocity for approximately 15 seconds, after which time it broke off level flight and headed down, passing under the B-29 at a gradual angle. As the object began to descend the flame diminished in size and got brighter. The navigator estimated that the object came within 3000 ft. of the aircraft and it appeared to be the size of an automobile. (Assumed to mean the same size as an automobile viewed from 3,000 ft.)

The B-29 was flying at 22,000 ft. altitude and at a speed of 200 knots.

The searchlights stayed with the aircraft for approximately four minutes and weak inaccurate flak was encountered during the entire incident.

Weak electronic signals were picked up by the electronic counter-measures operator for a short time.

II. STATUS OF INVESTIGATION

More details on the sighting have been requested from FEAF. Since the object resembles a surface-to-air guided missile, the incident has been referred to the ATIC guided missiles group.

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