If you can (hey, I managed it) on the Gardens, you can save the two guards from extinction (one of which gives you the J-154 password). The second man is supposed to die after he says "Here they come...get ready!"
I fried the battle droid that was supposed to kill him. Now I can't ask for the J-154 password while his companion is still alive, for the game also creates a new droid.
[This message has been edited by Saesee Tom (edited June 18, 2000).]