"Well, Dawson, I'm certainly mighty glad to meet you again!" the Colonel greeted him. "And you, too, Farmer. Neither of you has changed a bit."

"Thank you, sir," Dawson smiled back at him. "And it's good to meet you again. This is certainly one big surprise."

"Quite, sir," Freddy echoed as he, too, shook hands with the Colonel. "I hope you had a nice flight across."

"A perfect hop," the senior officer said. "But I'm forgetting my manners. Air Vice-Marshal Leman, let me present Captains Dawson and Farmer. But perhaps you've already met?"

The good looking Air Force officer, who had sat smiling behind a desk that seemed to fill half the room, got up instantly and came around it with his hand outstretched.

"No, but I've certainly heard no end of things about you two," he said as he shook hands with both boys. "But who hasn't, for that matter?" he continued with a chuckle. "Including Adolf Hitler, of course. There, have chairs, Gentlemen. I can see it in your faces that you are wondering no end what this is all about. Well, Colonel, I fancy you'd better do the talking for us, eh?"

The senior American officer smiled, nodded, and then waited until everybody was comfortably seated in chairs.

"I've a job for you," he presently told the two youths bluntly. "And I want to say right here that it is probably the toughest assignment you ever received. Feel like taking a crack at something really tough?"

Dave Dawson leaned forward on the edge of his chair, and nodded eagerly. All thoughts of leave were gone from his brain now. Just the sight of Colonel Welsh had changed everything all around. He was more than ever anxious for action.

"The tougher it is the better I'll like it, sir," he said with a grin. "Speaking for myself, of course."