This type of arrangement is hardly unprecedented, as Delta Force also worked in the shadows during the search for, and eventual killing of, Pablo Escabar in Colombia. They've also served in advisory capacities during hostage-rescue missions in places as diverse as Sudan and Peru.
Black Hawk Down (2001) Poster - "Based on true events, one of the best war movies I've seen. Intense, gut-wrenching, graphic battle scenes, action-packed and not for the faint of heart! Did I mention to keep the Kleenex handy?"