"You mean that little bird had a fusion engine on her?"

"Because we have the corner on building the fusion engines."

What remained of the ship finally exploded as the fusion engines let go.

And they were a long run for the Memphis, which would have needed two weeks to reach them with her fusion engines.

"Although I find it hard to believe that anything could evolve a fusion engine in the first place."

He considered his words a moment, then said, "However, studying them is how we learned to build our own fusion engines."

That means we don't need to inspect the fusion engines on the outside.

And that means they're going to have to start powering up their fusion engines immediately.

Even if we could start up the fusion engines, it would not do any good.

You mean the new fusion engines and all the rest of it," answered Jim.