It was also on July 21, that there was another report from a military flight crew that involved radar. According to a brief statement included in the Project Blue Book files, Captain Henry S. Anthony, Jr., and First Lieutenant John T. Larkins were airborne in the Beluga Lake area when the first contact was made at 18,000 yards:
Lock-on was accomplished at 12,000 yards and an intercept started. Target was level with the aircraft's speed greater than 100 knots to 6,000 yards. At this point the target disappeared and could not be reestablished. Pilot did not make visual sighting
A little less than an hour later, they made another attempt to contact the target. They had remained in the area searching for the UFO
While at 16,000 feet, contact was made at 12,000 yards. Lock-on was accomplished and target overtaken at 50-60 knots. At 1500 yards, set action resembled normal break-lock and target was lost due to an abrupt upward motion as seen in pilot's scope. Contact was re-established at 6,000 yards and followed to 700 yards where target and aircraft speed appeared the same300 knots. Intercept was continued to 400 yards at which time the target moved out rapidly to 3200 yards where speeds again synchronized with the target moving down. Pilot nosed the aircraft down and as speed increased to approximately 400 knots, the target was overtaken to 1500 yards. At this time the radar broke lock due to a rapid downward movement of the target. Again, no visual sighting was accomplished. During this incident, the weather was exceptionally clear with practically a cloudless sky
The Air Force found no explanation for this sighting. Again, the information was sketchy at best. The pilots had made no visual sighting, but were chasing an object seen only by their radar operators. There wasn't much that an investigation could accomplish, unless it could be proven that the radar had malfunctioned.
INVASION WASHINGTON, Pg. 60