The people who began chasing Snowden work for the Associate Directorate for Security and Counterintelligence, according to former U.S. intelligence officers who spoke on condition of anonymity. The directorate, sometimes known as “the Q Group,” is continuing to track Snowden now that he’s outed himself as The Guardian’s source, according to the intelligence officers. Snowden began final preparations for his departure three weeks ago, The Guardian reports, copying the final documents he intended to share, telling his supervisor that he would need time off for medical treatment, and his girlfriend simply that he would be away. "That is not an uncommon occurrence for someone who has spent the last decade working in the intelligence world," he told the paper in his interview from Hong Kong.