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| Season Number: 4 | Production (Airing) Number: 483 (83) |
| Guest Stars: | Robert Foxworth - Admiral Leyton Herschel Sparber - President Jaresh Inyo Susan Gibney - Cmdr. Benteen Aron Eisenberg - Nog Brock Peters - Joseph Sisko |
| Director: | David Livingston |
| Writing: | Ira Steven Behr & Robert Hewitt Wolfe |
| Summary: | An explosion at a Federation/Romulan diplomatic conference reveals that Changelings have infiltrated Earth. Sisko and Odo are dispatched from Deep Space Nine to Earth in hopes of preventing a Dominion takeover. While there, Sisko is placed in command of Starfleet Security on Earth. With his son Jake, Sisko takes the opportunity to visit his father, Joseph, in New Orleans. However, it's not long before the seriousness of the Dominion threat becomes apparent. Rumors develop that certain members of Starfleet have been replaced by Changeling counterparts. When Earth appears to have become defenseless, Sisko declares a State of Emergency and prepares for war with the Dominion. |