Related Clues:

• Many a 'Star Trek' officer: Abbr
• USCG officer
• Naval rank: abbr
• See 14
• None has two
• Halves of 24-Down
• Northern extremes?
• Innings' three?
• "London" has two
• Low-ranking U.S.N. officer
• Low-ranking off
• Wesley Crusher's rank on 'ST: TNG'
• Cincinnati triple
• Officer on a PT boat: Abbr
• The two for none?