'''Command Data Buffer''' also known as ('''CDB''') was a system in useused by the [[United States Air Force]]'s [[LGM-30 Minuteman|Minuteman]] ICBM force. CDB was a method to transfer targeting information from a Minuteman [[Launch control center (ICBM)|Launch Control Center]] to an individual missile by communications lines. Prior to CDB, new missile guidance would have to be physically loaded at the [[Launch facility (ICBM)|launch facility]]; the process usually took hours.