Related Clues:
- Rapid stream of liquid or gas
- Make it fast back to the Deep South
- 23 across are not slow to have them back
- So fast for the Deep South up there
- Make it well fast so as to plant it
- The depths are quick to turn up
- Make it fast to the bottom of the sea up here
- 'The primary factor in a successful attack,' per Lord Mountbatten
- Treadmill setting
- Shark fighter
- With 21-Across, motor for a Boeing 777
- Miles per hour, e.g
- Cheetah's forte
- Travel, in a way
- Radar-gun reading