The hostility between troops and contractors is nothing new.
In Saudi our contractors were universally despised.
They ran quite a racket using our trucks to go buy the stupid things we had to have: candles, a plastic basin to wash in, etc. -- then charging the soldiers hurricane-gouging prices for the items.
When their tent had to be relocated, the guys slashed the hell out of the roof of it before putting it back up -- Take that! -- we were, after all, just MI pukes. I can see Marines doling out more substantial retribution.