Kyle served as a reporter in the Air Force Reserves with the rank of lieutenant colonel, writing civil defense material, while working at radio station WPDM in Potsdam, New York.

He appeared with Paul Levinson, Greg Bear and many others on the History Channel's 2002 documentary, Fantastic Voyage: Evolution of Science Fiction.

[2][3] Kyle, an active fan since the earliest days of organized science fiction fandom, was an original member of New York's Futurians.

The manifesto led chairman Sam Moskowitz to ban several prominent members of the Futurians from that convention.

Kyle married another fan, Ruth Evelyn Landis (whom he had met through fandom), on August 31, 1957; for their honeymoon they flew to England for the 1957 Worldcon there, together with 53 friends and in-laws, on a specially chartered flight.