Auto Destruct Enterprise
Channel: Kingsirluke HD
Date: 11/10/2016

On Constitution-class starships, the captain and two senior officers were required to initiate the destruct sequence, using the following, concurrent codes.
Each officer would state their name, rank and corresponding code:
"Destruct sequence 1, code 1-1 A."
"Destruct sequence 2, code 1-1 A-2B."
"Destruct sequence 3, code 1 B-2B-3."
The computer would then reply:
Constitution destruct sequence countdown
The countdown begins (2285)
"Destruct sequence completed and engaged. Awaiting final code for (time interval) countdown."
The commanding officer would then state:
"Code zero zero zero. Destruct. Zero."
The sequence could be aborted at any time until T-minus five seconds by the captain or highest-ranking officer, with the command "Code 1-2-3-continuity, abort destruct order." Beyond that, the destruct order could not be cancelled (TOS: "Let That Be Your Last Battlefield"; Star Trek III: The Search for Spock)