Related Clues:

• Like the best security guards
• Cautious and conscious
• Earls' sent off for quick thinking?
• Like good sentries
• Text ___
• Might come as a text about a secret show location
• After drink, retweet hollow warning
• Frost advisory, e.g
• With ears pricked up
• Cellphone notice
• Shout "Duck!" to, say
• Ready for an attack, say
• Yell "Heads up!" to
• Skill to tie up the French on the ball
• Not missing a trick