Ernest Hemingway: "For Whom the Bell Tolls" (*2)

"They stood in the mouth of the cave and watched them.  The bombers were high now in fast, ugly arrow-heads beating the sky apart with the noise of their motors.  They are shaped like sharks, Robert Jordan thought, the wide-finned, sharp-nosed sharks of the Gulf Stream.  But these, wide-finned in silver, roaring, the light mist of their propellers in the sun, these do not move like sharks.  They move like no thing there has ever been.  They move like mechanized doom."