Related Clues:

• One way to stop
• Military command
• Freeze
• Stop
• Police radio alert, briefly
• Police radio msg.
• Leave off
• Alert, for short
• Police alert, for short
• Sentry's cry
• 'Stop!'
• What a patrol car might get, for short
• Urgent call
• L.A.P.D. call
• 'Don't move!'