Meanwhile Billy had been thrilling Pudge with a recital of all he and Frank had gone through since the fat chum left on his errand. He pictured the dash down the trestle when the determined German secret agents were trying to break in at the doors, so as to seize and run off with the wonderful machine. From that he went on to the adventure in the fog and darkness of the night while they lay on the water of the harbor, and the searching parties came upon them.
Then followed the early morning flight, what amazing things they had seen when passing over the trenches, the fierce bombardment to which they were subjected, the maneuvers of the hostile aircraft, the accident to the motors, and finally their triumphant return to the hangar.
Pudge drew a long breath when the story reached its conclusion.
"And to think that I wasn't along with you when all those things happened; it's enough to make anyone weep," he said, looking so downcast that Frank felt it only right he should try and cheer the poor fellow up.
"Never mind, Pudge," he told him, "you were doing your duty just as much as any of us. The fact that we made that grand trip over the firing lines doesn't mean we have any more reason to crow than you do. You can always say that you once had the great luck to be actually taken prisoner by the Germans."
"Oh! they treated me all right, only that they kept me a prisoner and wouldn't parole me on my honor not to betray them. Then, that cloth they tied around my face must have been something they picked up, for it seemed like an old rag. But thank goodness it's all over with now."
"Yes," said Billy lightly, "no use ever borrowing trouble about things that are dead and gone. You know they say the mill will never run again with the water that is past. But there's someone at the door, Frank."
"I imagine it must be our friend, Major Nixon," said Frank. "He's heard that we've been away on some sort of trial spin to test things, and has dropped around to learn how we made out."
"He's going to be surprised a whole lot when he hears all we've got to tell," said Billy, with a chuckle, as he started over to unfasten the door, upon the panel of which those knocks had been sounded.
It proved that Frank was a good prophet, for the visitor was the red-faced British officer connected with the aviation squad at Dunkirk. His manner betrayed the fact that he had come either to fetch some important news or else to be told something along those lines.