Parturition - S2-E7
Corrected entry: In the beginning of this episode, Paris and Kes are running a shuttle simulation. During the simulation the shuttle gets attacked by several Jem Hadar (Dominion) ships. The problem is, the dominion was unknown before Voyager left the Alpha quadrant, and does not find out about the dominion until Season 4 (Message in a Bottle). (00:00:55)
Correction: Jem'Hadar ships were first encountered in the final episode of Star Trek: Deep Space Nine's second season, set some months prior to the departure of Voyager from the Alpha Quadrant (which occured at approximately the same time as DS9's third season opened). As a new and formidable threat, it seems entirely reasonable that all simulation packages would have been swiftly upgraded to include the Jem'Hadar vessels.
Tailkinker ★