"Give up!" demanded the Venusian, tightening his grip.
Tom shot a hard right to his opponent's stomach
Slowly McAvoy sagged under the pressure Astro was applying and his face began to redden.
"He'll break his back," whispered Roger to Tom.
Tom nodded and stepped forward. "Let him go, Astro. He's finished."
Astro did not let go. His face was white with anger. McAvoy bent further back. "Give up," demanded Astro.
"Grab him," said Tom to Roger. "Get him off Mac before he breaks his back."
Tom and Roger jumped to Astro's side and each grabbed one of the powerful arms encircling McAvoy. It took all their strength to break the viselike hold the giant Venusian had on the other cadet, but slowly they pulled the muscular arms back and McAvoy slumped to the grass.