[last lines of the episode]
John Sheridan: Those who command the Excalibur will never stop, never give up, and never slow down until a cure is found. And we'll take any help we can get. Wherever and whoever it comes from. Because this is a cause that surpasses borders and difference and distrust. This is a mission of about the survival of Earth itself. What we do over the next five years, here, at home, and across the darkness between the stars, will determine whether an entire world will live ... or die. It's a fight we can't afford to lose. And we won't ... We won't.

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