Doctor of what is the question that almost makes it out of Wash's mouth, but he stops. Defusing the situation seems to be working here, and he's not about to fuck that up if he can help it.

He eyes the Doctor - "You do, but we'll talk about that in a bit." - before looking back at Cassie. "Does he need to learn it right this second, or can mandatory firearm safety classes wait for later?" There's a right answer here, Cassie. C'mon. It's along the same lines of what Trunks is saying - might as well reinforce the guy who's making sense here.