Related Clues:

• Fail as a night guard, say
• 40 winks, collectively
• Drift off for a bit
• Tour break activity
• Catch a few z's on tour
• This can happen on tour bus
• Grueling tour day break
• Brief tour time-out
• Tour break?
• Tour mini-break
• Get some sack time
• Be less than vigilant
• An hour of sleep, e.g
• Baby's time-out
• Catch a few winks