This is an interesting article in the Santa Fe Native American Culture Examiner, which includes a discussion of Native American actors in Longmire, as well as in some forthcoming and currently filming movies and series:
Big budget Hollywood films have come to New Mexico and cast native talent. Adam Beach portrayed Nate Colorado in ‘Cowboys & Aliens’ and David Midthunder portrayed an Apache Indian. ‘The Book of Eli’ with Denzel Washington had again David as an Alcatraz soldier. ‘The Lone Ranger’ is still filming in the state and Saginaw Grant has been cast as Chief Big Bear.