36 CFR § 2.32 - Interfering with agency functions.
(a) The following are prohibited:
(1) Interference. Threatening, resisting, intimidating, or intentionally interfering with a government employee or agent engaged in an official duty, or on account of the performance of an official duty.
(2) Lawful order. Violating the lawful order of a government employee or agent authorized to maintain order and control public access and movement during fire fighting operations, search and rescue operations, wildlife management operations involving animals that pose a threat to public safety, law enforcement actions, and emergency operations that involve a threat to public safety or park resources, or other activities where the control of public movement and activities is necessary to maintain order and public safety.
(3) False information. Knowingly giving a false or fictitious report or other false information: (i) To an authorized person investigating an accident or violation of law or regulation or; (ii) on an application for a permit.
(4) False Report. Knowingly giving a false report for the purpose of misleading a government employee or agent in the conduct of official duties, or making a false report that causes a response by the United States to a fictitious event.