Boeing B-52F
Boeing B-52F-65-BW (S/N 57-0153) of the 93rd Bomb Wing at Castle Air Force Base, Calif., on Aug. 1, 1969. Aircraft at right with only the tail visible is B-52F-100-BO (S/N 57-0031, the second Boeing-Seattle built F model). Also note the distinctive fairings on the left side of the engine nacelles. (U.S. Air Force photo)