The term of office of each member and alternate member of the committee shall be for two years from the date of their selection and until their successors are selected. The terms of office shall begin on August 1 and end on the last day of July, or such other dates as the committee may recommend and the Secretary approve. Members may serve up to three consecutive 2-year terms not to exceed 6 consecutive years as members. Alternate members may serve up to three consecutive 2-year terms not to exceed 6 consecutive years as alternate members.