As the team gets ready to leave Afghanistan everybody wants a souvenir - usually an illegal one - so Ellen decides to turn her final survival skills exercise into a contest, the winner claiming the company flag. Bird smooths things over by phone with Tower Block's wife, gaining a sister in the process but Simon, despite an act of bravery, is upset that he has not been awarded a medal - and that Ellen dumped the man who stole his girlfriend. As a result he goes AWOL in the hills, meaning that, as the others board the helicopter on their way home, Smith must stay behind to find him.
—don @ minifie-1