Clear the Command Deck and stop the attack on the Sephora - PART 2 | Mission 2: Battle for Sulaco A: CM Guide

Be ready to kill the first mercenary after stepping off the elevator. Replenish your supplies if needed, and move forward. New enemies should be waiting for you in the screening room pictured above. When you to try continue exploring the command deck, you'll receive a warning about active auto turrets, which you'll have to deal with.