“Members of a Secret Service special unit responsible for patrolling near the White House were pulled off that assignment over at least two months in 2011 to protect the assistant of the agency’s director while she was engaged in a dispute with a neighbor, according to a report in The Washington Post. Agents were told that the Secret Service director at the time, Mark Sullivan, was concerned that his assistant was being harassed by her neighbor. The agents were pulled from a surveillance team that patrols the outskirts of the White House compound and monitors the southern side of the executive mansion whenever crowds gather to watch the president and first family travel.”
http://www.dailymail.co.uk/news/article-2625372/Govt-agents-protected-directors-aide.html