There may be nothing here. Or there may be a significant piece of business. 1978 was the middle of the Carter white House years. Carter pardoned the draft dodgers and elevated many DDs, BCDs, and OTHDs to HDs for military personnel of the Nam era. I believe that it is important, not vital just important, to examine the Senator's separation from service. If he correctly received an HD good for him, but if he was first separated from the Naval Service for reasons other than honorable than that info must be put before the American People for their consideration.
It's widely discussed now in military circles among those in a position to know that Kerry did get a bad conduct discharge. This is why there are so many documents on his site attempting to show his discharge, but none of these docs make clear what happened. His record will be released before the election.