In "Homefront", the mistrust generated by the shapeshifters continues, with Captain Sisko suspecting his own father and recommending a state of emergency be declared on Earth. In "Paradise Lost", some Starfleet officers go further and attempt to implement a "coup d'état" against the President of the Federation after it is revealed that shapeshifters have infiltrated Earth and committed a terrorist attack. This leads to an armed conflict between Starfleet vessels for the first time in a century, according to the "Star Trek" in-universe timeline. Sisko is able to force Admiral Leyton to abandon his efforts to impose martial law by telling him: "You're fighting the wrong war!" Behr's favorite line from the episode is "Paradise never seemed so well-armed", highlighting one of many occasions when "Deep Space Nine" would point out the practical issues revolving around maintaining the peaceful culture of the Federation and the moral or immoral choices made to achieve this ideal.