Related Clues:
- Keeping one's radar up
- In skill the French sentry should be
- Early warning
- Word repeated before 'the gang's all here'
- Taking it all in
- Greet enthusiastically
- Thinking or acting quickly
- Colorful warning, often
- Wide awake to a siren call
- Danger signal, e.g
- Falling pellets
- Try to grab, as a cab
- Call from a distance
- Keenly attentive
- Icy fall