Byeman Control System
The BYEMAN Control System, or simply BYEMAN, was a security control system put in place to protect information about the National Reconnaissance Office (NRO) and its operations.
History
The BYEMAN Control System was put in place in 1961.
Origin of Name
An individual inside the CIA's Special Security Center chose the name from a random list of four words drawn from the CIA's codeword file. A byeman is a man who works underground; it is unknown if the individual knew the word's meaning before its selection.[1]
Retirement
BYEMAN was retired in 2005. <REF name=a>