The aircraft carrier

You open the door which feels extremely heavy and inside are rows of empty racks except for one, upon which a pistol is mounted. A box full of what looks like smoke grenades is also sitting in the corner of the small room. On another side is a bench with a guard on it, smoking a cigarette. He quickly reacts, and has you at gun point, while simultaneously screaming into his communication device. Another guard comes into the room, and you find yourself closed off in a tiny room.