Related Clues:

• See 38-Across
• Alerting light
• '___ Titanic' (1979 movie)
• Broken-down motorist's signal
• Solar ___
• 'Hel-l-l-lp!'
• Danger signal
• Emergency call
• Emergency signal
• '...and ___ yours!'
• ... _ _ _ ...
• Message in a bottle?
• Urgent
• Car trunk item, maybe
• Alert asea