Signal Beacon

Transcript:'' I figured out how to reprogram a bathysphere signal beacon to scramble Lamb's torpedoes. But I need access to a bathysphere, and Porter's got the only one in the Den locked away at this private dock! The son of a bitch... why doesn't he open up?!''

Location: In the Airlock room, on the floor next to the broken wall adjacent to the Vita-Chamber.