Colonel Trevor slowly let clamped air from his lungs, leaned back in his chair and looked at Group Captain Ball. The Air Ministry official returned the look and slowly nodded his head up and down as though it were hinged in the middle.

"Yes," he said as though talking to himself, "that time would just about put the photo patrol over their first objective. Yes, that explosion, or whatever it was ... must have been the end of those brave chaps. Blast this war! Blast me for issuing that order!"

No one said anything for a moment or two after the senior officer stopped speaking. Then Colonel Trevor spoke to Freddy again.

"You'd better go into detail on that little off the record night flight you made, Farmer," he said. "Did anything else happen? See anything else that didn't seem quite right to you?"

The English youth went into his thinking act again, and came out of it shrugging his shoulders.

"No, sir," he said. "Can't say, that there was anything else. It did seem a bit strange, though, that Jerry ground gunners and searchlight lads didn't do anything about that bomber flight passing over. And, of course, there wasn't a thing done about me when I returned back over the Channel. Quiet as could be, and twice as dark below. Fact is, I don't recall spotting a single light on the ground. But, of course, that's not unusual. Jerry knows quite a bit about black-out technique, too."

Colonel Trevor nodded, said nothing, and fell to studying his fingernails some more. Dave waited for somebody to say something, and when the silence continued he offered his suggestion to Group Captain Ball.

"If it hasn't already been made, sir," he said, "why not have a daylight photo patrol made over that area?"

"I thought of that," the Air Ministry official replied with a nod. "In fact I had arranged for a patrol to be made. Only...."

The senior officer paused and smiled at Squadron Leader Markham.