to slide up into his throat. The Intelligence Chief's face looked
like that of a ghost. Rather, it looked like the face of a man worried
sick; worried so sick he was seeing ghosts. However, with a tremendous
effort Colonel Welsh gravely presented the two air aces to Major General
Hawker who welcomed them with a smile and a few well chosen words. His
face, too, showed the nervous strain under which he was suffering.
Dawson, glancing from one to the other, felt the old familiar eerie
tingle at the back of his neck. The old eerie tingling that had never in
the past failed to serve as a warning of danger and death in the
immediate future.

"Be seated, gentlemen, please," the major general was saying, and
gesturing a hand toward a couple of chairs. "I--Well, Colonel, I believe
you'd better begin the talking, anyway. These two officers have been
working with you since the start of things. So go right ahead, sir."

Colonel Welsh nodded his thanks to the general and stared at Dawson and
Farmer with eyes haggard from worry and fear.

"Bad news for us," he said bluntly. "The thing we tried to prevent has
come to pass in spite of our efforts. Where the leak is, I don't know.
Maybe I'll never find out. But that is not important, now. What is
important is the fact that the Nazis have learned of the war conference
to be held in Casablanca. In short, the Nazis know that President
Roosevelt is coming to Casablanca!"

"You're sure, sir?" Dawson blurted out as the colonel paused for breath.

"As sure as it's necessary to be," the Intelligence officer replied,
tight-lipped. Leaning forward, he tapped a map spread out on the top of
the desk. "Take a look at this and tell me what it means to you."

Both Dawson and Farmer left their chairs to study the map. It was a
large-sized navigation map that included the eastern shores of the two
American continents and the western shores of the European and African
continents. The map was creased in many places, and there were many
smears of grease on its surface to indicate it had been used
considerably. What caught and instantly held Dawson's attention, and
Farmer's also, were the many penciled markings and notes on the map. At
first glance, they didn't mean much, but on second glance, their full
meaning was revealed. It was very startling, to say the least.

Dawson jerked up his head and stared in half-stunned amazement at
Colonel Welsh.

"This is an air navigator's chart, sir!" he exclaime