A: Yes – label them “Attachment 1 to TBS 325-10E for [Marine’s name]” and include the same date and signatures on each page if they contain substantive comments.
A: It’s an official record subject to Privacy Act – protect PII (name, EDIPI). Do not leave printed copies unattended.
A: Generally until the next FitRep is finalized, but unit SOPs may require longer (often 1 year or end of tour).