You’ll arrive in the Switching Hub in time to see a Big Sister flee through the shaft in the ceiling. Ready the Hack Tool and Telekinesis and slowly advance along the right side of the room. Fire the Hack Tool at the Security Camera on the far northern wall—just above the Health Station—and hack it quickly. Several Thuggish and Leadhead Splicers may attack at any moment. Hurl the gas cylinders and fuel drums lying around the area to take them out while conserving ammo.
Tenenbaum implores you to get to the elevators in the north end of the room. She can wait. Search the bodies for items and investigate the filing cabinets on the right for additional money and items. Finally, ride the elevator out of the area. Tenenbaum soon radios you during the slow ascent to the upper floor of the depot. Listen closely, her words are of great importance.