covered up."

"That leaves Russian or American missiles," I said, "as Steele first
suggested. But there are some points that just won't fit the missile
theory."

"You've left out one answer," said Purdy.

"What's that?"

"Interplanetary."

"You're kidding!" I said.

"I didn't say I believed it," said Purdy. "I just say it's possible."

DuBarry was watching me. "I know how you feel. That's how it hit me
when Ken first said it,"

"I've heard it before," I said. "But I never took it seriously."

"Maybe this will interest you," Purdy said. He gave me a note from Sam
Boal:

"Just talked with D-------," the note ran. (D------- is a prominent
aeronautical engineer, the designer of a world-famous plane.) "He
believes the disks may be interplanetary and that the Air Force knows
it--or at least suspects it. I'm enclosing sketches showing how he
thinks the disks operate."