From the article:

Safstrom, for example, comes from a thoroughly military family. His mother and father have served in the armed forces, as have his three sisters, one brother and several uncles. One week after the Sept. 11 attacks, he walked into a recruiter's office and joined the army.

"You guys want to start a fight in my backyard, I got something for you," he recalls thinking at the time.

But in Safstrom's view, the American presence is futile. "If we stayed here for 5, even 10 more years, the day we leave here these guys will go crazy," he said. "It would go straight into a civil war. That's how it feels, like we're putting a Band-Aid on this country until we leave here.