Related Clues:

• Staff sgt., e.g
• "Uncanny" trio
• Naval off
• Moneypenny's trio
• "The Nanny" has three of them
• Halves of 41-Across
• eg Corporal
• eg RSM
• Measures 29 out of nose, put out of joint?
• Low-ranking USN officer
• Many a PX customer
• Dash measures
• A penny's two
• PT boat officer: Abbr
• Sgt. or Cpl