I just saw last night's episode. It took the Captain an entire episode plus ten minutes to realize Robert Patrick's COB was missing. They never checked for him during last week's crisis, and now that this week's ship siege is over, nobody's still in any hurry to find him. Maybe he's of filming a movie, but to me this is a terminatable offense.....
Meanwhile Grace just happens to find the critical second launch key hanging on a wall, and the Captain's skeptical. He suspects her unless she finds out who did it. Even if she does, how's the Captain to know it's not a frame up? (Even though I'm sure she's innocent. Nobody guilty could be that stupid.)