"Armageddon Game" is the 33rd episode of the American science fiction television series Star Trek: Deep Space Nine.
[1] Dr. Bashir and Chief O'Brien have spent the past week helping two races, the T'Lani and the Kellerun, dismantle deadly biological weapons known as "Harvesters".
The T'Lani and Kellerun ambassadors inform Commander Sisko that O'Brien and Bashir died in an accident, and provide a recording purportedly showing the deaths of the entire science team due to an automated security routine.
The senior staff of Deep Space Nine grieve the loss of their crewmates, and Sisko informs O'Brien's wife Keiko of his death.
Keiko insists that the recording of the supposed accident has been falsified: the video shows O'Brien drinking coffee in the afternoon, something she is certain he would never do.
They reveal that the attack on the science team was a joint endeavor meant to erase all knowledge that could potentially be used to make Harvesters, and prepare to execute Bashir and O'Brien.
As Chief O'Brien recovers from the Harvester poisoning back on Deep Space Nine, Keiko is stunned to discover that he does drink coffee in the afternoon.