The P.O.W.-M.I.A. flag, as described in §58-4-304, may be displayed at each welcome center operated by the department of tourist development, and, if so displayed, shall be third in order on the flagpole after the flag of the United States of America and the Tennessee state flag. When the P.O.W.-M.I.A. flag is so displayed, it shall be displayed during the same hours and maintained in the same manner as the flag of the United States of America and the Tennessee state flag are displayed and maintained at the respective welcome centers operated by the department of tourist development, notwithstanding §58-4-304 to the contrary. Flags displayed pursuant to this section shall be donated in accordance with §58-4-302 and no state funds shall be expended to purchase the flags.