The sole Boeing YKB-29T Superfortress,(Boeing B-29-90-BW Superfortress) 45-21734, fitted with three refueling hoses, assigned to the 421st Air Refueling Squadron, Yokota Air Base, Japan, 1954  Returned to United States and retired to AMARC, Feb 1955
United States Air Force
1954
Menard, David W. (1993) USAF Plus Fifteen: A Photo History, 1947-1962. Schiffer Publishing, Ltd. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0887404839" title="Special:BookSources/0887404839">ISBN 0887404839</a>  Image source listed as United States Air Force