Suggestions for a military novel?

Well, I'm afraid you haven't got a story here yet. We have all this and have no idea what the real problem this character is going to face is. Worse, I don't believe this character at all. I can't see someone having been in the Navy for five years and being deployed having no idea what they are coming into and reacting to "large guns" and being this afraid. I know that it's possible to be in the Navy for some time without being on a ship although they used to require everyone to make a training cruise fairly early in their time in service. We don't get any feeling for the character other than weakness and fear. We could use some dialog to get to know her. Maybe have her talk to Rick about what she's feeling. But I hope she's not really the wimp she seems. I don't think I would make the being in a novel a "prologue" when there's no significant change in time or character. Give us some story and a reason to like the protagonist.