DS9 Season 5 Episode 23 Blaze of Glory

Plot

Captain Benjamin Sisko receives a recording of an intercepted message: the few surviving Maquis terrorists who have not been wiped out by Cardassia's Dominion allies have launched a massive retaliatory missile strike against Cardassia. The missiles are believed to be equipped with cloaking devices, and unless they are stopped, Sisko fears the Dominion response will envelop the entire quadrant in all-out war. Sisko goes to the message's intended recipient: Michael Eddington, now in prison. Eddington refuses to tell Sisko how to stop the missiles; so Sisko takes Eddington with him to compel him to help.
Upon entering the Badlands, a dangerous region of space where the Maquis hid out, Eddington is still uncooperative. Sisko traps him into taking over the runabout's controls to evade two pursuing Dominion warships. Eddington finally agrees to help Sisko find the launch site to deactivate the missiles, but vows to kill him afterwards.
Meanwhile, in a side plot back on Deep Space Nine, cadet Nog earns the respect of the Klingon soldiers on the station by learning to stand up to them.
Sisko and Eddington arrive at Athos IV, a tiny, fog-bound planet where the launch site is hidden. Upon landing on the planet, they discover the facility is crawling with Jem'Hadar, the Dominion's soldiers, with many of the Maquis dead. Eddingtion is shocked and stunned: the Maquis had been on the verge of declaring their colonies an independent nation from both Starfleet and the Cardassians. Sisko admits that Starfleet let the Maquis down.
Sisko and Eddington fight their way to the command center, where Sisko is surprised to find a dozen Maquis prisoners, including Eddington's wife, Rebecca Sullivan. Eddington reveals that there are no missiles at all — Rebecca sent the message as a code to let Eddington know they had fallen back to Athos IV. Eddington knew he would need Sisko's help to evacuate them, and manipulated him in order to reach the location. Sisko is furious at being lied to, but relieved that all-out war is no longer imminent. He and Eddington fight off the Jem'Hadar while directing the prisoners toward the runabout, but Eddington is shot. Insisting Sisko and the others continue without him, Eddington stays behind to fend off the soldiers and is killed.