Related Clues:

• Bright-eyed
• Give a heads-up
• Type of post-caffeine state
• Percipient
• Ready to ship out
• ''Heads up!'' e.g.
• Sound the alarm
• Far from drowsy
• Not asleep on the job
• Storm posting, e.g.
• Warning notice
• Like a sentry
• Prepared to ship out
• Bushy-tailed?
• Red __