AF Pilot on round-robin flight from Yokota AFB to Iwo Jima observed an unidentified radar target 15 miles from Iwo Jima traveling 600 knots on a 35 degree bearing. Pilot called Iwo Jima and was advised that no a/c were in area. On his return trip pilot observed same object 10 miles N and 20 miles N on radar screen. Pilot reported 100 miles N at 0006K (time) that object appared to follow him and that it closed within 1 mile from him and then disappeared from radar scope.

Brad Sparks:
This is just a BB Record Card and very unreliable.  Already it has two totally inconsistent times, 2345Z and 0006K (Korea time) when Korean time is GMT + 9 hours ahead assuming no Daylight Savings Time.  The 2345Z time would be 0845K time.  The 0006K is supposed to be LATER not >8 hours EARLIER.  This is typical of BB sloppiness that they couldn't even convert time zones correctly. There is enough there on the Record Card that is clearly unexplainable as Anom Prop that I would list the June 18 case as a poor quality Unknown until a case file was obtained. It is difficult to see how anom prop could cause a target to approach to within 1 mile or 0.5 mile of an aircraft flying well above any inversion layer.  Even if it was an elevated layer it has to reflect off a real target on the ground and the angle would be too steep.