them.

"Get news to-day? What makes you think we shall?" asked Jack.

"Well, we might bring down a Fritzie or two who'd know something
about poor Harry," was the answer. "You never can tell."

"No, that's so," agreed Jack. "Well, here's hoping we'll have
luck."

By this time there was great excitement in the American aviation
headquarters. Word of the oncoming Hun planes had spread, and not a
flier of Pershing's forces but was eager to get into his plane and
go aloft to give battle. But only the best were selected, and if
there were heart-burnings of disappointment it could not be helped.

Two classes of planes were to be used, the single seaters for the
aces, who fought alone, and the double craft, each one of which
carried a pilot and an observer. In the latter cases the observers
were the new men, who had yet to receive their baptism of fire above
the clouds.

Tom and Jack were each detailed to take up one of the new men, and
the air service boys were glad to find that, assigned to each of
them, was the very man he would have picked had he had his choice.
They were eager, intrepid lads, anxious to do their share in the
great adventure.

Quickly the machines were made ready, and quickly the fighters
climbed into them. The roar of the motors was heard all over the