Jack was greatly excited at the prospect of at last flying for France, and also of looking down on the trenches of the Germans for the first time. Tom warned him to curb his enthusiasm lest it unfit him for the important work which he had undertaken to perform.

“You’ll need your head every minute of the time, remember, Jack, if it’s up to you to relay signals. Don’t forget their importance. A mistake would cost the French dear, as an attack might be ordered on false information that would break down, and mean the loss of many brave men.”

That sobered Jack.

“I guess you’re right there, Tom,” he remarked, as he completed his dressing for work, even to the muffler about his neck; for with winter still holding on to some extent, it would be bitterly cold far up toward the clouds.

All around them there was a deafening roar as motors were being tested, and machine-guns fired in trying them out, so as to make sure they were in perfect condition for instantaneous use. Since the life of the pilot often depends on the excellence of his artillery it is of the utmost importance that the mitrailleuse is kept in order.

“Oil and gas!” they heard being bawled at many a mechanician by the eager pilots; the mechanics adjusting the gasolene and air throttles while the pilot gripped the propeller.

“Contact!” shrieked an attendant close to Tom, and the word was echoed by his pilot, who snapped on the switch, as the man spun the propeller. The motor took, the machine started forward out of line with the many others, raced more rapidly over the ground, and then took the air like a great bird. Jack had gone off with the Frenchman whom he was to accompany aloft.

There was no time to think of anything that had to do with sentiment. If fortune were kind the two chums expected to meet again later in the day, to compare notes as to their various experiences.

Now Tom’s sergeant signaled to him to get seated, while he himself looked to the few last things that were necessary. In another three minutes he had given his mechanician the word, and Tom had followed Jack into the air.

The ascent was easily accomplished, and Tom Raymond quickly saw that there was a master hand at the wheel. The veteran pilot had been almost constantly at the work of handling a heavy machine since the first year of the great war. He had had many narrow escapes from death, but for all that he never took unnecessary chances under the conviction that he bore a charmed life.