| Answer | Crossword Clue |
|---|---|
| SIRENES | Air-raid warning devices. |
| ALERT | Air raid warning. |
| siren | device often electrically operated for producing a penetrating warning sound an ambulance siren an air-raid siren |
| ALERT | Raid warning |
| SIRENS | Warning devices |
| HORNS | Warning devices |
| ALARMS | Warning devices |
| FIREALARMS | Elementary warning devices? |
