I walked into my office and took in the quiet of the place. It had the feel of an underground bunker. The ceiling was dropped down low. (I would later learn that that was because it was underneath the Oval Office, and the wires that provided the encryption for the president’s communications needed extra space.) An old wooden desk had two computers on it—one for unclassified information, and one marked Top Secret. I hung my coat on a hanger in the small closet, feeling, in some new way, grown up.

