Related Clues:

• 'Shall we go?'
• Starter's alert
• "All set to go!"
• Done preparing
• Word to a marksman
• Word flashed at the beginning of some video games
• Query before a big event
• Ready to race
• Fully prepared
• Out of neutral
• ''All systems go!''
• "__, aim, fire!"
• '___ or not...'
• 'You good to go?'
• Prep