Construction of first Boeing Model 717 (KC-135) U.S. Air Force military jet tanker, at Renton, Washington. USA

The first U.S. Air Force jet tanker prototype being assembled in the Boeing Renton plant in Washington, USA. Like the Boeing 707, Its design is based on the Boeing Model 367-80 ("Dash 80"). But it is smaller, overall, than the 707, has a narrower, windowless fuselage, different cockpit window configuration, etc. Engineers are seen looking at design drawings placed on a wing. A worker climbs partway out of cockpit window.. A woman works on an engine nacelle. Several views of the plant interior with all activity concentrated on construction of this single aircraft.