Related Clues:

• "___ if by land ..."
• 1300 hours
• Small sample
• It's "for the money"
• Count near the end of a countdown
• Sound receiver
• Slender figure?
• Something for the road
• 'A Chorus Line' smash
• End of a countdown
• "We're number ___!"
• Shortwave, e.g.
• Insepar-able
• Imus' medium
• With 17-across, cause of mass ruin