Duty sees the Zone as an ulcer in the world that must be purged at all costs, as they believe that if left unchecked, mutants will soon break out of the Zone and attack the outside world. Other members are ordinary stalkers who have seen enough of the Zone's horrors, and have decided to do something about it. The founding members of Duty, as well as many of its subsequent members, were originally Ukrainian Military troops and Special Forces units sent into the Zone and left to die there after being nearly killed by the Zone's mutants and anomalies.