Jack straightens up at the question from the Castellan, prepared to answer that yes of course he knows about the enemy and how they fight, though he'd probably tactfully refrain from mentioning that his experience comes from a relative time future after the Time War with the Doctor's ninth regeneration.

And speaking of tactful, Jack sort of sits with his mouth slack from almost speaking while Savannah cuts in with ... what!? The Captain shoots her a look. A rather indescribable look of confused ... is that horror?

Right. Right? He schools his attention back towards the Lady President and Castellan. "I've fought Daleks before." The confidence in his voice, of course, is going to make up for Savannah's questions. Hopefully.