After a final check of passengers on board, a US Army UH-60 Black Hawk (Blackhawk) helicopter prepares to take off during a search and rescue exercise conducted as part of the operation. This operation is a security mission to enforce the United Nations no-fly zone north of the 36 degree parallel from Iraqi air and ground incursion. A four nation coalition of US, Turkey, Great Britain and France has been actively protecting and supplying Kurdish refugees since Desert Storm in 1991.(Exact date unknown)