Final answer:
The question is metaphorical and likely refers to a change in leadership or the end of a tenure for an 'Admiral' who can no longer 'run the graveyard,' potentially due to a shift in responsibilities or a figurative or literal demise.
Step-by-step explanation:
The question seems to revolve around a metaphorical or titular "Admiral" who can no longer run the graveyard due to a change in his responsibilities or perhaps due to his demise. The excerpts provided for context appear to be from various literary sources dealing with themes of leadership, loss, and the transition of roles during times of crisis. Without further context, it is difficult to determine the exact reason the "Admiral" can no longer run the graveyard, but it appears to be an analogy for a change in leadership or the end of a tenure.
In one provided quote, there is a mention of Admiral King, the antisocial head of the fleet, which suggests a person in a high leadership position undergoing a transition, by combining his role with that of the chief of naval operations. This suggests a consolidation of power but hints at future conflicts due to his abrasive nature, which could metaphorically mean he 'can't run the graveyard' because his focus or capacity has shifted, or perhaps because his actions may lead to his own professional 'demise'.
The use of phrases such as 'My Captain does not answer', and imagery around prisoners and a ship at rest also suggest the end of a commanding role, either through loss or completion of duty. The 'graveyard' in literary terms often symbolizes an end or a rest, which could imply that the Admiral's time in his position or his life is coming to an end.