Eligible service members can opt into BRS any time from January 1, 2018 to December 31, 2018. Once an opt-in decision is made, it is irrevocable. Therefore, prior to the opt-in period service members should take advantage of the numerous DoD training and informational tools available to assist in making an informed decision on the financial implications specific to their retirement situation. It is incumbent that service members who are eligible to opt into the BRS be equipped with the knowledge necessary to make the best decision for their own individual circumstances.