This photo is actually the property of me, Sgt John Panas, Jr (retired MSgt), the crewchief of Acft 56-3456.  I crewed her from 1969 to 1970.  Named "Darlene's Dear" by my pilot, Lt Col Reagon. I climbed the revetment wall to get this angle for the picture.  It was a favorite technique used by many of the crewchiefs at the time.
United States Air Force
1969
Donald, David (2004). Century Jets: USAF Frontline Fighters of the Cold War. AIRtime. <a href="//commons.wikimedia.org/wiki/Special:BookSources/1-880588-68-4" title="Special:BookSources/1-880588-68-4">ISBN 1-880588-68-4</a> Image source listed as United States Air Force