The caption for the same picture in the Time-Life book is as follows:
"Curious Japanese crowd Tokyo's Hibiya Park to peer at a full-scale model of a B-29 along with the Kawasaki Swallow that brought down the original aircraft on December 3, 1944. The fighter pilot managed to crash-land his damaged plane in a rice paddy. The B-29 was demolished, but the Japanese made a reasonably accurate guess at the arrangement of crew stations in its nose. Beneath the painted cutaway are remnants of the bomber: tires, machine-gun parts and, at far right, a fuel tank"