Dusty swung the radio gun on a second Black ship. It burst into flame.
“To Captain Ayres: The greatest among us has died by your hand. We, the living, are pledged to avenge that loss. Within forty-eight hours you and your comrades will be wiped from the face of the earth. Nothing can save you!” This message, signed Ekar, was dropped on Dusty’s drome; at the same time another Yank air field nearby was wiped out by a new horror weapon – a flaming rain that destroyed everything it touched! How can America fight this new menace? How can she keep the Blacks from crossing her borders?’
“When Dusty heard about America’s new invention, the X-Rayoscope, by which the human eye could penetrate night, fog and clouds for a distance of two hundred miles, he thought victory was at hand. With such a machine to spy on the enemy, the war would soon be over. But he didn’t know about the doom even then speeding through invisible skies, had not yet heard of the green thunderbolt!”