The Guilted Cage: The Fallen World, Book 18 (Unabridged‪)‬

On the day the world ended, Tyrone followed Teledyne's orders and led a fleet of bombers over Colorado Springs, where he dropped enough thermobaric bombs to erase all life in the city.

At the end of that day, he found himself the leader of a community of survivors on the grounds of what had once been the United States Air Force Academy, the school from which he'd graduated. Decades later, Tyrone has maintained the secret of what he did from the community he protects, but when Tyrone's adopted son, Kid, makes a discovery in a nearby lake, it could ruin everything.

To the southwest, a group known as the Riders, whose mounts are giant wolves, win a great victory and seek to re-open communications with nearby communities. But when they find a city that's been razed by a well-equipped, well-organized military force from New Mexico, they vow to find the perpetrators and make them pay.

The trail takes them to the foot of Cheyenne Mountain, where they find the evil force working to unlock deadly secrets that have lain dormant since the day Tyrone bombed the city.