Steve bounded to his feet.

"Run for your life!" he shouted.

"Is the magazine going up?" cried Bob.

"Something is going up in a minute. It may be the magazine."

This time Rush grabbed Bob, starting on a run with him. Both boys were choking from the smoke they were inhaling.

"You're on fire!" yelled Jarvis. "Stop! I'll put it out."

"No, no, no! Keep going. Don't stop. It won't hurt me to burn a little. I'm already pretty well cooked—"

Boom!

A reverberating report sounded through the level, and the Iron Boys were hurled violently to the ground.