
| Year | Event | ||||||
| 2362 |
● [1]
The Setlik III Massacre takes place. This marks the first time that O'Brien has ever killed another person. [2]
| ||||||
| 2367 |
|
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 6 | Realm of Fear | O'Brien says he has been using Transporters for 22 years. In |
| 2 | TNG | 4 | The Wounded |
| Series : | TNG Season 6 |
| Episode : | Realm of Fear |
| Comment : | O'Brien says he has been using Transporters for 22 years. In |
| Series : | TNG Season 4 |
| Episode : | The Wounded |
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