"Like this." After locating acceptable wipes, McCoy returns to the little girl and, cooing at her, undoes the sides of her diaper and lifts her gently to slide the nasty surprise out from under her. Though he pulls a face at the smell of what's in the diaper, his movements are efficient, and he explains each step to Jim as he goes through it.

He looks over at the captain as he fastens the sides on the clean diaper. "Got it?"