I dunno, thought this episode was really starting to lose it. The Grace/COB stuff was cheesy as was the XO's wife's "america is the other woman and he would never betray her for anything" crap. Too much groan-worthy stuff. The captain is really good, but man the XO is like the most boring white guy actor in history.
What this show has really copped out on is America on America warfare. They didn't sink any American subs this ep. In an earlier ep we had a "oh cool they're taking on Navy Seals oh wait never mind they're Russians instead" cop-out.
I think there is potential in the premise, but this show feels too neutered by its aired on broadcast network TV status to me.