Related Clues:

• Air raid signal, e.g
• Notification, e.g
• Phone pop-up
• Hyperaware
• Red ___ (emergency status)
• Signal change when head of state takes more central role
• Awake
• One might cause a phone to buzz
• Alarm caused by first of regulations in a lease
• Ready for a long drive
• 'Spoiler ___ . . .'
• Boozer possibly overlooking time on the watch
• Period of vigilance
• Dealer tries to keep vigilant
• Vigilant prince consort ditches bishop