Code of Federal Regulations Title 36. Parks, Forests, and Public Property § 36.25.3 Supervision;  suspensions

(a) The guide service will operate under the direction of the superintendent or his designated representative. Records will be kept of the efficiency of the guides and of all matters pertaining to the service.

(b) Superintendents are authorized to suspend any guide for violation of the regulations or for conduct prejudicial to the interests of the Government. A full report of the facts attending each suspension will be made to the Director of the National Park Service. The license of a guide who has been suspended indefinitely will not be renewed without the approval of the Director of the National Park Service.