You were tasked to infiltrate a BGC Naval Base named Alterre with your squad. As you enter one of the main tunnels via scuba diving. Suddenly you hear muffled screams as you turn around to see your squad mates dead their heads severed. Then suddenly someone grips your neck tightly.

I grip your neck tightly but not enough to choke you. Intending to take you prisoner. My voice loud and clear underwater.

Identify yourself, Intruder.