Tom Swift and the Electronic Hydrolung

From the book:Tense, excited men gazed spaceward from the ships and planes of the South Atlantic task force. Other watchers waited breath-lessly in the control room of the ship Recoverer. Among these was Tom Swift Jr. "How close to earth is our Jupiter probe missile?" Bud Barclay asked Tom excitedly. The lanky blond youth beside him, in T shirt and slacks, shot a glance at the dials of the tracking equipment. "Eight thousand miles from this spot, Bud. It should land here in fifteen minutes!" Tom Jr.,…