The brevet medal design stays constant for a period of four years. A new medal design appears in the year after each PBP. In PBP years, ACP does not want excess unsold medals, so it requires that national organizations such as RUSA pre-order all the medals they think they will need for the PBP year. Obviously, RUSA does not want to order too many and have excess inventory, nor does RUSA want to disappoint our members who want a keepsake. But it can transpire that the supply of some medals may be exhausted towards the end of the four-year period, and thus unavailable for purchase. [12/2017]