There was light. For an instant Coburn tensed. But the plane climbed and the brightness steadied. It was the top of a cloud bank, brilliantly white in the moonlight. They had flown up through it, and it reached as far ahead as they could see. A stubby fighter plane swam up out of the mist and fell into position alongside. Others appeared. They took formation about the transport and all flew steadily through the moonlight.

"I wish I knew," said the American colonel vexedly, "if those creatures were only testing weapons, or if they were getting set to start bargaining with us!"

"Meaning?" asked Coburn.

"If they're here," said the colonel angrily, "and if they do mean to meddle in our business, they may set up a sort of auction with us bidding against the Iron Curtain gang for their friendship. And they'd make any deal!"

The Greek general agreed drily. He said that free people were not practical people. They were always ready to die rather than cease to be free. Surely the Greeks had proved themselves ready to die. But people like the Bulgarians thought that to continue to live was the most important thing in the world. It was, of course, the practical view-point....

"They can have it!" growled Coburn.

Janice said hesitantly: "But the Invaders haven't killed anybody we know of. They could have killed the Bulgarians. They didn't. The one who called himself Dillon stopped one man from killing them. And they could have killed us, earlier today at the airport. Could they want to be friends?"

"They're starting the wrong way," said Coburn.

The Greek general stirred in his seat, but he was pointedly silent.