Code of Federal Regulations Title 32. National Defense § 32.552.124 Transportation of privately owned weapons and ammunition

(1) Weapons, other than weapons being transported into Fort Lewis for the first time, may be carried in vehicles only when traveling to and from an authorized hunting area during hunting seasons or enroute to or from authorized target practice and matches.

(2) The carrying of loaded privately owned weapons in a vehicle is prohibited.

(3) Privately owned weapons carried in a vehicle will be secured in the trunk or encased and carried in such a manner that they will not be readily available to the driver or passenger.