Starfleet Records. Dominion war. Prelude: As part of a preemptive defensive effort, the Trill government cooperated with Starfleet in trying to seal the wormhole permanently in 2373, without damaging the beings living within. The attempt was sabotaged by a Changeling infiltrator disguised as Julian Bashir. The Bashir Changeling was stopped by the crew of the USS Defiant in his attempt to destroy the Bajoran sun, which would have killed all life in the system and destroyed the Federation, Klingon

Starfleet Records. Fleet's personnel. Seven of Nine. Torn from the Collective: The Collective assigned Seven of Nine to work with Voyager to develop the weapon. When her cube sacrificed itself to save Voyager from an attacking 8472 bio-ship, she and a few drones beamed onto Voyager to continue the work. Source: VOY: "Scorpion", "Scorpion, Part II". Star Trek Star Trek. Live the experience. | Starfleet Command