Final answer:
The process for banking a coast selection when transferring from Japan, Guam, or Korea is case-specific, dependent on various factors and policies at the time of transfer.
Step-by-step explanation:
The coast selection process for military personnel transferring from Japan, Guam, or Korea is generally case-specific and can depend on a variety of factors including branch of service, individual circumstances, and the specific policies in place at the time of transfer. There is not an option that universally allows a coast selection to be 'banked' for later use upon transfer from these locations. As such, the most accurate answer to this question would be case-specific.