"Couldn't we do just as well with a large electric fan?" Smitty asked, half-jokingly.
"This propulsion unit will cost only a fraction of the price of a large air-conditioning fan and motor," Morrow pointed out.
Smitty grinned at the diagrams. "Okay, but you've certainly sketched in a fancy-looking ship, there! Aero-dynamically, I'm afraid it wouldn't be too practical—"
"I know," Morrow admitted. "But we'll have to work that out and still keep this fancy-looking ship."
"How come?"
"Because that's the whole idea, Smitty! Think a minute. Suppose we've built our ship and are flight-testing it. So there's always the possibility that someone will see it—"
"—And call the cops!"
"Right. Normally, that would bring on an investigation and we'd be finished."
"I hope they serve good food at Leavenworth!"
"Stop interrupting, will you? Now, the idea is this: suppose whoever sees us thinks they're seeing a ship from outer space?"