In Diefenthal v. Civil Aeronautics Bd., 681 F.2d 1039 (5th Cir.1982), cert. denied, 459 U.S. 1107, 103 S.Ct. 732, 74 L.Ed.2d 956 (1983), the Court, commenting on the discretion which is usually accorded administrative agencies, stated: It was precisely because Congress could not be aware of the particular problems or needs that would develop in an area that it delegated authority to the agencies, within the broad confines of the statutory scheme, to deal with these problems as they arose. Id. at 1044.