Part four: the Troopers are reaching the end of their training programme and are hungry for combat experience that makes them real SAS soldiers. The basic infiltration skills that were mastered in their first nine months of training must now be carefully honed and specialised. Each of the five Troopers will be allotted to one of three environmentally specialised troops – one goes to Amphibious Troop to polish his infiltration skills in the water in Auckland's busy commercial port. They must attack a ferry posing as an enemy ship; gaining access to it undetected and seizing the ship's bridge. Three men go to Air Troop where they must master the art of freefall and hone their parachuting skills. Once acquired, this technique is used to exit a Hercules at 1200ft and the Troopers have to navigate across the sky laden with a full pack to a precise landing point somewhere below them. Finally, one man goes to Mountain Troop where they concentrate on infiltration above the snow line and over alpine terrain. The Troopers are forced to make camp as the weather closes in. As the situation worsens they dig an ice cave for extra protection and move into survival mode, which is a real baptism of endurance. For three days they lie low waiting for a break in the white out and the opportunity to march on to meet their food drop; a two day march away. Then, a final 'live firing rehearsal' gives the Troopers the opportunity to undertake an exercise that mimics operational conditions with experienced Troopers. Their mission is to destroy an enemy weapons site in terrain that resembles Afghanistan. A helicopter insertion under the cover of night drops them 15km from their target and they must track across enemy country to their mission objective. For the first time there is an enemy lurking that they will encounter at some stage, but they don’t know when, and with live rounds loaded they're ready for action. Will the New Zealand government deem these five Troopers good enough to become real NZSAS Soldiers?

An exclusive documentary series about the inner workings of New Zealand's most famous fighting elite, the top 1% of the New Zealand Defence Force, better known as the NZSAS (New Zealand Special Air Service). Based on three years of unprecedented access, it follows a handful of aspirant soldiers trying out for selection as SAS troopers through to readiness to deploy overseas, and participation in the Global War on Terror, at a moment’s notice.