The Germans are Coming! Sound Bombs Soar 



Photos © Int. Film Scrv. 



When air raiders approacli 

 London warning is now given 

 by sound bombs which rise 

 three hundred feet before ex- 

 ploding. Above is shown the 

 mortar which is used for firing 

 the rockets. They get results 



Inserting the time fuse in a 

 rocket before sending it aloft. 

 The bombs produce a tre- 

 mendous noise which can be 

 heard over great areas. Lon- 

 don has come to know this 

 helpful "run to cover" signal 



