My favorite part of this episode is the very beginning, right before they engage the fleet (right between the "and now the conclusion" and the intro. Sisko's dispatching orders, Nog's freaking out, and O'Brien begins to recite from The Charge Of The Light Brigade with Bashir joining in. This doesn't help Nog's state of mind, and we see O'Brien give him the advise to focus on his work to hide the fear - with a slightly quieter "That's what I do".

Something about that sequence resonates strongly for me.