The civil freighters can do just as good a job as the military stuff as there is no requirement for short field performance at Port Au Prince. The USS Carl Vinson is stationed on the coast but finding things difficult due to a lack of suitable landing zones for helicopters near to where people need them. With Haiti being 500 miles off the U.S coast there is little point in the U.K sending aircraft there if money can just as easily mobilize supplies from the U.S.