To listen to the human side of sequestration, wait in line here for the 595 bus to Reston, Va., a journey across a suburbia grown fat and happy on a federal spending boom in the past decade, primarily military. While the rest of the country experienced a corrosive recession, unemployment in Arlington County, home of the Pentagon, never rose above 5 percent. Nearby Fairfax County, with a cyberintelligence industry that took off after the Sept. 11 terrorist attacks, gorged on government contracts to private companies. “It was easy, and people got comfortable,” said Stephen S. Fuller of George Mason University,...