You may apply for a Time in Service (TIS) Waiver not to exceed 12 years, 0 months at the time of the selection board panel. The Time in Service is calculated using your Basic Active Service Date(BASD) by the reclassification board date in which you are applying. The Director of Acquisition Career Management (DACM) scrutinizes TIS waivers. Therefore, you must ensure that you follow (to the letter) the instructions provided to you for packet submission.