COMMAND AUTHORIZATION

	The command to activate auto-destruct can be issued only by a 
limited number of crew members according to specific flight rules. 
Conditional tests programmed into the main computers are distributed to key 
autonomous subprocessor nodes throughout the ship to allow the auto-
destruct sequence to be carried out, even if the main computers are 
disabled. These tests check for the proper sequence activation inputs by 
command personnel, beginning with the captain and first officer. The 
programmed conditions check for the succession of command personnel; if 
either the captain or first officer is determined by the computer to be 
unavailable, the system will accept inputs from officers only down to the 
position of Operations Manager.

	In the case of authorization issued by the captain and executive 
officer, the captain activates the destruct sequence program, and both 
officers provide verbal input, which permits the computer to recognize the 
identity and authority of both officers. The computer then requests verbal 
confirmation of the executive officerÕs concurrence with the destruct order. 
Following such confirmation, the computer will request the desired interval 
until destruct. At this point, the auto-destruct sequence will commence, 
counting down until scheduled destruct. Computer voice announcements 
and data graphic displays throughout the spacecraft provide time-remaining 
information.

	The auto-destruct sequence can be aborted by voice command at 
any time prior to the actual activation of the ordnance packages at T - 0 
seconds. Authority for cancellation of the auto-destruct sequence is vested 
with the captain and executive officer.  Æ