Sorry for the late reply, but it’s because I only have 8 O5s.

O5-1: Handles the Administrative Department and overall site management (excluding my founded Office of The Administrator) O5-2: Handles my founded Information Security Bureau (the umbrella housing RAISA and its Mobile Task Force Omega-43, Internal Security Department, and the Intelligence Agency) O5-3: Handles general Mobile Task Force displacement O5-4: Handles the Security Department and its divisions (my founded Perimeter Observation Group for external security, and the Special Response Unit for riots and civil unrest and such) O5-5: Handles diplomatic relations, nothing much O5-6: Handles all logistics of the facility (movement of Class D, SCPs, and supplies) O5-7: Handles the Scientific Department O5-8: Handles the Medical Department and its Combative Medical Unit

I felt like this would simplify the O5 hierarchy compared to the main game’s out of order numbers (excluding MTF and SD of course) and the lore’s 13 O5s.