Get Out of Denver

A post-apocalyptic prepper novel of collapse, retreat, and rebirth
When planes fall from the sky and the streets of Denver erupt into violent chaos, McLean faces a choice. He can drop everything and run for his mountain retreat, or he can go back for the woman he's begun to care about. 

Carrie was never part of his plan, but without her his plan may lose its meaning. Before their journey is over, she will have a greater part to play than either of them suspected.

Making their way out of a city in full societal meltdown and across the Colorado Rockies to the ranch where they hope to find refuge, McLean and Carrie's small band grapples with the dangers and obstacles of a world without order and a life in which the strength of individuals-- both physical and internal-- will define their ability to survive.