152 Republic of Panama, or of the police force charged with the preservation of public order outside of the Canal Zone, as well as of their baggage, munitions of war and supplies. Article X 131 ... in the event of the discontinuance of the Panama Railroad, and of the construction or completion by the United States of a strategic highway across the Isthmus lying wholly within the Canal Zone ... the United States of America may in its discretion either prohibit or restrict the use, by buses or trucks not at the time engaged exclusively in their servicing of, or the transportation of supplies to, installations, facilities or residents of the Canal Zone, of that portion of such highway which lies between Mount Hope, Canal Zone and the intersection- of such highway with the Canal Zone section of the Trans-Isthmian Highway. ... Article XI 132., The Republic of Panama agrees . that the United States of America may extend the privilege of purchasing at post exchanges small items of personal convenience and items necessary for professional use, to military personnel of friendly third countries in the Zone under the auspices of the United States. C. Memorandum of understanding reached-Panama 1955 On the Part of the Republic of Panama: 149. 1. The Republic of Panama will lease to the United States of America, free of all cost save for the recited consideration of one Balboa, for a period of 99 years, two parcels of land contiguous to the present United States Embassy residence side, as designated on the sketch.... 151. 3. So long as the United States of America maintains in effect those prviions of Executive Order No. 6997 of March 25, 1953, governing the importation of alcoholic beverages into the Canal Zone, the Republic of Panama will grant a reduction of 75 percent in the import duty on alcoholic beverages which are sold in Panama for importation into the Canal Zone pursuant to such Executive Order. 153. 4. .. the United States shall have free access to the beach areas contiguous to the maneuver area described in said Article VIII for purposes connected with training and maneuvers, subject to the public use of said beach as provided under the Constitution of Panama.