Related Clues:

• Early morning sound in the barracks
• Military signal to wake up
• The get-out-of-bed bugle call
• They're faucets in America
• Military signal and faucets
• The wake-up army bugle call
• Military signal to turn the lights out
• Army bugle call to get out of bed
• Military signal for lights out
• Military signal to wake up
• It causes lights to go out
• For water and lights out, by the sound of it
• They may be turned on for lights out in the US
• At the end of the day they get turned on for the American serviceman
• Blow this to start with