Under Siege - Clearance Revoked?
When Comander Krill pulls Raybacks personal file he states that, "his clearance was revoked and he could only hold the rate of a yeoman or a cook."
Being a Navy veteran with a clearance myself, I assure you with the amout of personnel files yeomans have access to they have a clearance.
Highly unlikely a Commander wouldn't know this.
Who's the Tech advisor.