now almost sunset. The fliers were coming down one by one, their labor for the day having been accomplished. It had been a pretty arduous day, too, and two members of the escadrille had new honors coming to them, since they had dropped enemy planes in full view of tens of thousands of cheering spectators, after thrilling combats high in the air.
One had also passed through an experience that few aviators can look back to. He had started to drop rapidly when, at almost ten thousand feet altitude, his motor was struck by a missile from a rival pilot's gun. When halfway down, either through a freak of fortune or some wonderfully clever manipulation on the part of the pilot, the machine righted, and he was enabled to volplane to safety, though considerably bruised and cut up through hasty landing.
Jack quickly had his little Nieuport out of the hangar, and the three airmen began a minute inspection. For a short time nothing developed that had a suspicious appearance. Jack, in fact, was beginning to believe the warning might after all be in the nature of a fake, or else the spy had not found a favorable chance to do his foul work before being frightened off.
But presently Tom gave utterance to an exclamation.
