A B-29 Superfortress nicknamed "Dottie" of the 20th Air Force takes off From Chungking, 3 December 1944. Printed caption on reverse: 'U.S. Superfortress takes off from Chungking. The U.S. Superfortress "Dottie" roars through the air after using a specially lengthened airstrip for a take-off from Chungking Airport, December 3 1944. The formidable craft landed out of gas November 21, while returning from a raid on Omura, Japan. The whit line in the foreground of the picture marks the curved airstrip which was built for tyhe daring attempt.'