Gul Dukat Gets His Comeuppance in Civil Defense

In "Civil Defense," an old security system is reactivated while O'Brien does routine maintenance, making the computers think a Bajoran terrorist attack is in progress. Gul Dukat arrives at the station after getting an automated message from himself about the security breach. He offers Major Kira a deal--allow permanent Cardassian presence on the station in exchange for information on how to deactivate the auto destruct sequence. But there's one thing he didn't anticipate...