Related Clues:

• GNP, for one
• Word heard on ''ER''
• Sports-card datum
• ESPN no.
• Baseball-card number
• ''At once!''
• R.B.I. or H.R.
• Rebounds or assists
• Fantasy football figure
• RN's ASAP
• Runs, hits or errors
• On the double, in the OR
• 'Immediately!,' in the operating room
• ''Photo'' or ''thermo'' attachment
• 'Chop-chop!'