Answer:

adm

Answer	Crossword Clue
ADM	USN flag officer
ADM	Rickenbacker, for one
ADM	Naval VIP

ADM	Halsey's title: (abbr.)
ADM	USN bigwig
ADM	Navy VIP (abbr.)
ADM	USN VIP
ADM	USN boss
ADM	USN rank
ADM	Farragut's rank: Abbr.
ADM	Nimitz's title: Abbr.

ADM	Nav. officer
ADM	USN officer
ADM	Fleet boss: Abbr.
ADM	40-Acr. bigwig
ADM	Halsey's USN rank
ADM	Naval off.
ADM	Nimitz's USN rank
ADM	Highest-ranking USN officer

ADM	Fleet VIP
ADM	Navy VIP
ADM	Nelson, e.g.: Abbr.
ADM	USCG VIP
ADM	USNA rank
ADM	High USN rank
ADM	High-ranking USN official
ADM	High nav. rank

ADM	Nav. rank
ADM	Armada VIP
ADM	High naval rank (abbr.)
ADM	Ackbar is one in "Return of the Jedi" (abbr.)
ADM	Naval officer (abbr.)
ADM	Rickover's rank
ADM	Gen.'s counterpart
ADM	Naval BMOC

ADM	Naval bigwig: Abbr.
ADM	Top USN rank
ADM	Nav. bigwig
ADM	Naval officer: Abbr.
ADM	Nimitz or Halsey: Abbr.