Code Name: Diamond Head

Code Name Diamond Head is a 1977 American spy film starring Roy Thinnes as an undercover counterintelligence officer known as Diamond Head whose mission is to stop a rogue double agent from stealing the formula for a new chemical weapon. Originally filmed as a pilot for a new television drama which was never picked up by the networks, it was eventually used for The NBC Monday Movie on U.S. broadcast network NBC.

The film is currently available only in VHS format. The Mystery Science Theater version was released on March 27, 2012 as part of the 23rd boxset of the series.

Source: Wikipedia