Related Clues:

• Beginnings of middles
• Low USN rank
• Acute care letters
• New USN officer
• Junior nav. officer
• Quartet in ''Mamma Mia!''
• 'Emmy' has two
• Noun half?
• Typographic measures
• Hootenanny trio
• Momma's triplets?
• Pennant trio?
• Mormon couple?
• Grp. of CPR experts
• Chekov, e.g., on 'Star Trek': Abbr