Tachikawa AB Japan radar-visual unidentified-object report — July 1961

On or during July 1961, at or near Tachikawa AB Japan, Japan, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING: Round, white light, approximate size of basketball, approached observer's position at high rate of speed, leveled off at about 500 feet and then accelerated and climbed out of sight. THREE WITH LIGHTS AND ONE OF THEM NOTICED A LIGHT THAT MOVED. (1) DIRECTLY OVERHEAD. (2) DESCRIBE ANGLE- 315 DEGREES. (3) STILL AT FIRST SIGHTING- MOVED SLOWLY NORTH- STOPPED- MADE TURN TO RIGHT, EAST HEADING-STOPPED- MADE TURN TO RIGHT- TURNED NORTH AND SPEED INCREASED- STARTED A ZIG ZAG MOVEMENT AT FAST SPEED AND KEPT THIS UP UNTIL DISAPPEARANCE IN A/E DIRECTION. (4) GRADUALLY FADED OUT (5) FIFTEEN MINUTES C. NO REPORTED RADAR OR RAFCOP. NO CONCLUSIONS DRAWN AS TO NATURE OF SIGHTED OBJECT.