Before going after your objective look around the commons, as there are some lockers and crates there. Enter the Sleep Block C through the entrance on the right side of the Store. Go on towards the basketball court – go through the locker room where you'll find Level 5 suit Schematics in front of the washbowls. Get back to the commons and buy a new suit in the Store. Now is the time to look for the Navigational cards. Take the elevator on the left side of the Store. There is a Save Station on the upper floor, you'd probably want to use it now. Go through the door next to the Upgrade bench.