Val makes his own little frustrated noise at the word 'citation', but the stubborn determination to deal with it one way or another makes him smile. He squeezes the back of Kazu's hand, and lets his head fall back against him.

"I haven't had a full night's rest in days. Yet I do not know if I'm quite prepared to sleep just yet."

In other words: yes, he's tired, but he's not sure he's ready to fully surrender the evening to sleep right away, either.