The young cadet pressed a small button on the counter and turned the horn toward the mysterious box. Immediately the needle on the dial above the horn jumped from white to pink and finally red, quivering against the stop pin.
"Hot!" exclaimed Tom. "She almost kicked the pin off!"
"Get off the ship!" roared Connel. "It's a fission bomb with a time fuse!"
Tom dove at the box and tried to pull it off the stabilizer, but Major Connel grabbed him by the arm and wrenched him out into space.
"You space-blasted idiot!" Connel growled. "That thing's liable to go off any second! Get away from here!"
With a mighty shove, the spaceman sent Tom flying out toward the jet boat and then jumped to safety himself. Within seconds he and the young cadet were aboard the jet boat again and, not stopping to answer Astro's or Roger's questions, he jammed his foot down hard on the acceleration lever, sending the tiny ship blasting away from the _Polaris_.
Not until they were two miles away from the stricken rocket ship did Connel bring the craft to a stop. He turned and gazed helplessly at the gleaming hull of the _Polaris_.
"So they know," he said bitterly. "They're trying to stop me from even reaching Venus."
The three cadets looked at each other and then at the burly spaceman, bewilderment in their eyes.
"What's this all about, sir?" Roger finally asked.
"I'm not at liberty to tell you, Manning," replied Connel. "Though I want to thank you for your quick thinking. How did you happen to discover the bomb?"
"I was sighting on Regulus for a position check and Regulus was dead astern, so when I swung the periscope scanner around, I spotted that thing stuck to the fin. I didn't bother to think about it, I just yelled."
"Glad you did," nodded Connel and turned to stare at the _Polaris_ again. "Now I'm afraid we'll just have to wait until that bomb goes off."
"Isn't there anything we can do?" asked Tom.
"Not a blasted thing," replied Connel grimly. "Thank the universe we shut off all power. If that baby had blown while the reactant was feeding into the firing chambers, we'd have wound up a big splash of nothing."
"This way," commented Astro sourly, "it'll just blast a hole in the side of the ship."
"We might be able to repair that," said Tom hopefully.