He forgot how Jim tends to react to the mere thought of his superiors learning anything. However bemusing his textual panic is, it does get through to the Imperial and he's quick to respond with an attempt at reassurance.

Don't worry so much. I'll take care of him. He seems harmless enough. All you need to do is cover for him so nobody goes looking.

"...Hmm? Oh." He looks back up at Norn, realizing that his new friend looks just as nervous about this as Jim sounds. And here he thought Starfleet officers would handle planes-hopping much better than his narrow-minded kinfolk. "Try to relax. I'm sure this is all rather a shock, but it's perfectly safe." A beat. "For now. Anyway, the good news is that the captain's just asked me to see that you're properly briefed. But first, we do need to check whether the portal you entered through is still open."