All of the pics from the links you posted are of special forces personnel in a hostile combat zone... The beards would normally be considered "out of uniform", and the hats are approved for special forces strictly. There are no special forces in the state militias/National Guard, and I don't believe that the attire worn by the men in the bomb scene pictures would be authorized for official duty. They definitely look like private contractors.
I'm a vet, btw.
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