Janeway in “Unfinished Business”

Janeway

(to Chakotay) I can tell you this: one of two things is going to happen...either Seven and I will succeed on our mission, and return within a few days...or your long-range sensors will detect a large explosion in subspace. If that occurs, you'll have less than ten seconds to jump to warp, and get the hell out of here. Head for the Alpha Quadrant and don't look back. Understood?