RedDwarf and Neutron: Proceed towards the security department. If HeadOfSecurity had the disk, maybe he hid it in his workspace before going to murder you?

Already in the cards. You two are headed for maintenance at the intersection of security and the bridge, where WhiteDwarf will meet up with you. From there, you can figure out where HeadOfSecurity is and come up with next steps to get that son of a gun permanently horizontal.

WhiteDwarf: Yoink one of those dead idiots' headsets so you can listen in on their chatter.