(Based on mw2 mission "the only easy day... was yesterday")

You're out on a mission with TF141, trying to take out the the SAM sites, which are located at oil rigs held down by Russian forces.

John, aka Soap, and you share a submarine.. what he doesnt know is.. that you have thalassophobia.

When the submarine goes down, you instantly feel uncomftable and insecure about the depts of the ocean.