![](https://image.tmdb.org/t/p/original/jsoAC0UtGnzr5ua89hoq1WegKFQ.jpg)
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Natural Selection
While struggling to keep himself and his translator alive after their helicopter crashes in Siberia, Bob remembers the process in which he went through to become a member of the Unit.
![](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![](https://image.tmdb.org/t/p/w300/4YQqympyv56ekNfOQtyDfsY1LMF.jpg)
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Other episodes for this season
![Change of Station](https://image.tmdb.org/t/p/w300/gWCxAlw6JCJGJxVuft1QFZTTBH.jpg)
![Extreme Rendition](https://image.tmdb.org/t/p/w300/xbNUA7oRfuqdOfvrvISAKPcS1aD.jpg)
![The Kill Zone](https://image.tmdb.org/t/p/w300/t1sYMtH6hNt2wusTsD2WSRorulF.jpg)
![Manhunt](https://image.tmdb.org/t/p/w300/mc7jBUtrw9g08YPkaPEA8r8LMt2.jpg)
![Force Majeure](https://image.tmdb.org/t/p/w300/fxnvSvojWmE31VTJ7vWaARx6Y1G.jpg)
![Old Home Week](https://image.tmdb.org/t/p/w300/f4U4rZ5ZFN03opLQYSVlPnnXlWE.jpg)
![Off the Meter](https://image.tmdb.org/t/p/w300/8gCCx7nSz2EcLebfLLtJz9EC4VY.jpg)
![Natural Selection](https://image.tmdb.org/t/p/w300/jsoAC0UtGnzr5ua89hoq1WegKFQ.jpg)
![Report by Exception](https://image.tmdb.org/t/p/w300/t4cEvde7RS9Z9e0d6Gr9kKQc1t5.jpg)
![Bait](https://image.tmdb.org/t/p/w300/snmVILa95S8ab4pAFB8JCuUFtou.jpg)
![Silver Star](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![The Broom Cupboard](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Sub Conscious](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Johnny B. Good](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![The Water is Wide](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Games of Chance](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Dark of the Moon](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Two Coins](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Outsiders](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![In Loco Parentis](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Bedfellows](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Freefall](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
![Paradise Lost](https://image.tmdb.org/t/p/w300/k09KM1bUN92PZyY6kQZKm9PmlTz.jpg)
While struggling to keep himself and his translator alive after their helicopter crashes in Siberia, Bob remembers the process in which he went through to become a member of the Unit.