Related Clues:

• Posthaste, briefly
• ASAP
• ''And make it snappy!''
• Letters akin to P.D.Q.
• On the double, in the O.R.
• 'Stat'
• In very short order
• Express letters?
• 'Immediately,' in the O.R.
• Quickly, in the I.C.U.
• ''... and make it fast!''
• 'Stat' in memos
• 'Yesterday!'
• Order request
• Career HRs, e.g.