A Luftwaffe pilot who I worked with at TTTE many years ago told me that his USAF Instructor on the F104 had shot down a B52 in a 104 by accident- may be B******T though.
Said USAF Pilot apparently became a Shuttle Astronaut according to him.
No one is supposed to be able to shoot down the mighty B-52 Stratofortress bomber. But on April 7, 1961, someone did. On that date, an F-100 Super Sabre of the New Mexico Air National Guard shot down a B-52 with a Sidewinder missile.
Perhaps he was referring to this incident?