Special Operations Forces Liaison Element
The Special Operations Forces Liaison Element (SOFLE) is small group of special forces personnel, sometimes just one or more at a time, that terrorists are thought to be operating, planning attacks, raising money or seeking safe haven, especially those teams in the United States. These units work to gather information on possible terror threats, but do not actively hunt down terrorists.
Source: Wikipedia — Special Operations Forces Liaison Element (CC BY-SA 4.0)