Security.

This is coolbert:

From that same previous story the ISIL advance on Haditha Dam also this item:

Private security guards en route to Iraq, the protection of U.S. military personnel the mission.

"Two Iraqi advisers to Mr. Maliki said there would be more than 1,000 American private security guards coming to Iraq to protect the 300 military and intelligence advisers that will be here to help the Iraqi government fight ISIS, far more Americans than previously acknowledged. One adviser said the number of private guards would reach 1,700."

American Special Forces and intelligence analysts as dispatched to Iraq not having an organic combat capacity and an ability to defend themselves?

These might not be Blackwater mercenary personnel [does Blackwater even exist any more?]. Possibly Ghurka, Fijian, South African, etc. Non-American.

NO American boots on the ground other than the original three hundred.

coolbert.