Final answer:
A Performance Information Memorandum must be forwarded to the command preparing the FITREP or EVAL within 30 days after the end of the reporting period.
Step-by-step explanation:
According to the policies regarding Fitness Reports (FITREP) and Evaluations (EVAL) in the U.S. Navy, a Performance Information Memorandum should be forwarded to the command preparing the regular FITREP or EVAL report within 30 days after the end of the reporting period. This is done to provide supplementary performance information to ensure that the official record is as accurate and complete as possible. This information can be crucial for personnel evaluations and decisions related to promotions, assignments, and other career development opportunities.