Maintenance periods for the Navy’s ships and submarines are taking longer than they should. And there are a lot of reasons for that, but one that the Navy’s only recently discovered is that most of the supplies shipyard employees need to do the work aren’t on hand at the time the work’s supposed to start. On average, less than a third of the material needed for a given maintenance availability is even identified before the work starts.  The Navy’s trying to fix that as part of a broader logistics improvement program called Naval Sustainment System Supply (NSS-S). On this week's show, Rear Adm. Peter Stamatopoulos, the commander of Naval Supply Systems Command talks with Jared for an update on NSS-S -- including how it's tackling shipyard material availability.