Related Clues:

• Puts on the qui vive
• College books
• APBs
• Some computer messages
• Bookstore purchases
• States of readiness
• Notices
• APBs, e.g.
• Transcripts
• Color-coded government announcements
• Colorful warnings
• Sounds the alarm, e.g.
• These may be red
• Urgent warnings
• Gives a heads-up