Related Clues:

• Security concerns
• Gives information to
• Gives a heads-up to
• Sounds the alarm
• ''Heads up!'' and others
• "Fore!" and "Duck!"
• Bells and whistles, maybe
• Gives info to
• Puts on notice
• Warning notices
• ''Fore!'' and ''Duck!''
• Sounds an alarm
• Puts on guard, warns
• Warns of impending danger
• Puts on guard, forewarns