Actually, it's more like:
"NO! . . . I . . . can't . . . LEAVE!!
I love this delivery. It's one of the high points of the episode, if not the high point.
The medal scene and how it plays into Shatner's delivery at the transporter console are to me brilliant and the high point of the episode.
I also love the scene with McCoy relaxing under the shade of his favorite tree....and how fast he become confrontational and offers to play the tough guy. Great moments in this episode, IMO.