Byeman Control System

The BYEMAN Control System (BCS) was put in place in 1961 by the Central Intelligence Agency.

[1] The use of BCS was so prevalent throughout the U.S. Intelligence Community, that a handful of websites were set up to direct users through the retirement process.

A byeman is a man who works underground; it is unknown if the individual knew the word's meaning before its selection.

[6] In the 1998 blockbuster movie Armageddon, a misspelling of the word, (i.e. "BYMAN") is used on a cover sheet protecting photos of the incoming asteroid.

In the 1985 spy movie “The Falcon and the Snowman”, the main character played by Timothy Hutton is entering a top secret spy satellite support facility for the first time when he passes a sign stating that it is “RESTRICTED ENTRY - BYEMAN CLEARANCE REQUIRED”