Wyo. Stat. § 10-4-203: Display of pilot's license.

The certificate of the license required shall be kept in the personal possession of the licensee when he is operating aircraft within this state. The license must be presented for inspection upon the demand of any passenger, any official of the United States department of transportation, any peace officer of this state, or any person in charge of any airport or landing field in this state upon which he shall land.