For nearly two decades, Scott Blake Harris’ career had been on a straight trajectory. From Harvard Law School he landed a coveted clerkship with Gerhard Gesell, the federal judge who presided over key cases from Watergate to the release of the Pentagon Papers. After that, Harris moved on to Williams & Connolly, one of Washington’s most storied firms, where he spent 16 years.

Then in 1993, he jumped into government work. “I was happy and had really great work,” said Harris, 61, of Williams & Connolly. “When the time actually came, I almost made the decision not to leave.”