Chitose AB Japan unidentified aerial event — May 1955

On or during May 1955, at or near Chitose AB Japan, Japan, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING Round, white object followed by smoke trail with sparks and/or flames, falling from object. Descended slowly in level flight. No explosion observed. FIRST SAW FROM SPEED 7. SPECIAL LIGHT AC OF UP & DOWN CON, SPENDING & DISMAS, ABOUT 222 AM TO THEN LEFT OF COURSES LGHT THREE OR 3 MILES THEN DISAPPEARED, A HAGURE?