to some of the firms often referred to in the news as 'contractors' working in Iraq. If you encounter problems applying the definition to all of them, you have already learned something important. Only a modest proportion of them can be actually categorized as private military or private security contractors (
PMCs and PSCs), which have led to many exaggerated estimates about the number of private military personnel in Iraq published by the mainstream media.
Disco Rupert is still unsure about PMCs, but he shows some promise.