The nature of a MASH unit is to move patients through as quick as you can. Patch them up good enough to get them out to Seoul or Tokyo if they need more care; never let them stay in a bed for too long if another wounded soldier can occupy it instead. It's so rare you get to linger. So if Mulcahy's convalescing, then it's kind of nice that Radar can take the time to do just that.

"You're welcome, sir."

As long as Mulcahy stays here today, Radar will too.