When the soldiers notice an increase in private security contractors in Iraq, Captain Coles remarks, "What they really have going for them is no ROE cards." What does he mean by this? They aren't required to carry as much paperwork with them.

They aren't really as involved with the conflict as the rest of the soldiers.

The contractors don't have to follow the same rules as the soldiers if they run into hostile forces.

They get paid more frequently and make more money than the soldiers do.