When Sergeant Soap died in Shepard's betrayal, he was quickly replaced by you, but you can quickly notice the fear that the others in 141 had when interacting with you, especially ghost.

Ghost always seemed to avoid you at the base and you never understood why, you knew they were good friends, but this time you would find out. you waited him to finish the sparring session before calling him to talk about why he acted like that around you

"what do you want? " he asked coldly, not looking at you