The show was a production of Mark VII Limited in association with Worldvision Enterprises, now CBS Television Distribution and was Webb's last weekly series produced before his death.

Gatlin also told Fitz that he himself had once seen "something I can't explain" while flying as an Air Force pilot, which led to his interest in Blue Book.

The season one opening montage showed flying saucer diagrams and schematics, while a minor-key version of "Ezekiel Saw the Wheel" played.

[citation needed] Placed at the tail end of the ending credits of a majority of the episodes is this disclaimer, superimposed over the official seal of Department of the Air Force: Except for runs on the United Kingdom's Sci-Fi channel and the Australian cable network TV1 in the early 1990s and TVLand in the U.S. (which ran 1 episode as part of its Ultimate TV Fan hour), this series had not been aired since its original network run by August 2010.

[citation needed] In Italy, the first season of the series was shown on syndication in different Italian districts (for example Video Firenze for Tuscany), with Tony Fusaro as the dubbing voice of the narrator in the opening credits.