For the elite SAS soldiers, specialists in high impact, close contact engagements, killing is a simple fact of life. In this programme they explain how they rationalise this brutal part of their existence. The soldiers reveal how, while on peacekeeping duties in Sierra Leone, they were kidnapped by a violent rebel group. The rebels were high on drugs and alcohol and prone to extreme violence, from shooting people to hacking off their heads. Witnesses and players in this hostage rescue share their experiences.