Copper Mountain — Rachel Neumeier

An immense demon lies asleep beneath Copper Mountain in Colorado. Sooner or later, it's going to wake up. Unscrupulous black witches hope to use long-forgotten magic to harness the demon's power. Colonel Herrod of the Special Forces has more than one plan for dealing with both the demon and any witches who make an attempt to bind it. But Miguel Toland is pretty sure that no matter what else might happen, eventually Dimilioc is going to have to deal with that demon . . . and it looks like that means he's going to have to deal with it himself. No matter what the cost.