The following rules apply:
(a) If on September 8, 1982 the employee was serving or committed to serve a tour of duty in Alaska or Hawaii then the employee shall continue to receive reimbursement for tour renewal agreement travel;
(b) After September 8, 1982 you must determine that tour renewal agreement travel expenses are necessary for the purposes of recruiting and retaining employees and you must inform employees in writing that tour renewal agreement travel for the purposes of recruiting and retention is limited to two round trips beginning within 5 years after the date the employee first begins any period of consecutive tours of duty.