Related Clues:
- Eagle-eyed
- Standing at the ready
- Sign word that may be followed by an exclamation point
- Shout "heads up!"
- Paying heed
- "Heads up!" e.g.
- All eyes and ears
- It's high when it's red
- Attentive to possible danger
- Not asleep
- Bright eyed and bushy tailed
- Not just stirring
- Bit of Weather Channel news
- Watchful and ready
- Primed for action