Flying Mother Provides Triple Feeding -- A U.S. Air Force B-29/refueled three British one tine in this 1951 demonstration of the multiple refueling process which has been kept under a blanket of secrecy until now. Fuel lines,which can be controlled individually extend from wing tips and fuselage of the B-29 to the noses of British jets. Flight Refuelling Ltd., the British concern which developed the triple feeding equipment, says the process will reduce by half the number of planes needed for air patrol. May 13, 1953. (Photo by AP Wirephoto).