4-11: Paradise Lost
Paranoia swarms as Sisko and Odo work to prevent a military power-grab at Starfleet Command, while the Defiant is believed to have been overtaken by Changelings.
4-07: Little Green Men
Quark, Rom, and Nog accidentally transport themselves back to the Roswell Incident on Earth in 1947.
4-06: Starship Down
Upon rescuing an alien ship, The Defiant is badly crippled by the Jem'Hadar and becomes trapped in a gas atmosphere.