UFOs: from complete sceptic to convinced, the Stanton Friedman interview (video).
Stanton Friedman was a legendary engineer and scientist who worked on nuclear rockets for the 1960s space programme under Kennedy.
He was also the original civilian investigator of the Roswell Incident.
Stanton went from thinking UFOs were all bunk, to a confirmed believer as he investigated case after case.
He died in 2019, but this hour-long interview shortly before he passed showed he remained as sharp as a tack to the very end.