I returned from war to find my 12-year-old daughter living in a pigsty. “She didn’t deserve the house,” my wife screamed. She and her brother planned to sell my home and discard my daughter. “He said you were gone,” my daughter cried. They came to celebrate with champagne but found me instead. They had awakened a soldier’s rage, and their world was about to end.

The dust of the Middle East has a specific taste. It is metallic, ancient, and relentless, coating the back of your throat until you forget what fresh air feels like. For eleven months, that dust was my atmosphere. It was the grit in my teeth when I shouted orders over the roar of Humvees; it was the film on my skin when I tried to sleep in a cot that smelled of diesel and fear.

When the transport plane finally touched down on American soil, and later, when the Greyhound bus hissed to a halt in the center of Willow Creek, I expected that dust to vanish. I expected the air to taste like peace. I expected the heavy combat boots, which carried the invisible weight of foreign deserts, to finally feel light.

I was Captain Daniel Mercer. I had survived ambushes, navigated minefields, and led men through the valley of the shadow of death. But as I stepped off that bus, searching the small, sun-drenched station for the two faces that kept me alive, I didn’t know that the war wasn’t over.

I didn’t know that the enemy was no longer across the ocean. The enemy was in my own backyard.