April 1, 1948; About 9 miles SE of Sorsogon, SE Luzon Island, Philippines (BBU)

9:55 a.m. USAF Lt. Meyers leading a flight of four P-47 fighters of the 67th Fighter Sq was flying S heading 180° at 1,500 ft altitude when he saw a half-moon shaped "flying wing" about 30 ft wide 20 ft long, with a barely perceptible dorsal fin, flying on a N heading 360° at about 1,000 ft about 3 miles to his E [evidently silhouetted against the surface 9 miles away at a depression angle of about 2°]. He immediately executed a 270° left turn to identify the object when it made a 90° left turn [banking evidently] leveled out on a W heading 270° accelerating rapidly to disappearance in 5 secs, no trail [assuming 10x distance increase to reduce apparent size below visual resolution limit, and constant acceleration, terminal velocity would be about 11 miles per second or 39,000 mph at about 350 g's]. (FOIA; FUFOR Index)