"In the camp with the troops; in the hangars there are no sleeping places."
"And the hangars are at some distance from the troop camp?" Tom asked.
"The troop camp begins over that way," Papa Prim continued, pointing, "for, as you will understand, there must be ground on which the airplanes may run before they rise. So there is some distance. I came near forgetting to tell you that, behind the hangars, are four tents in which the hangar guard sleeps."
"And how many sentries at a time walk post around the hangars?"
Dick inquired.
"I do not know," confessed Papa Prim, "but I do not believe there are more than three or four sentries on duty at a time. Of course, there are other sentries on post at the camp."
"And airships leaving fly directly over the camp?" Tom wanted to know.
"You have said truly," replied Papa Prim. "And are there anti-aircraft guns in the camp?" Tom asked.
"In the troop camp, so I have heard, but I have not seen them," answered Papa Prim.
Removing his steel helmet and taking it in his left hand, Dick bent over, seizing Papa Prim's hand.
"Good-bye for a little while, monsieur," he said earnestly. "We go away with hearts full of gratitude to your own fine, loyal heart. May you prosper and be happy, with your children safely returned from Germany. May all good things in life be with you. Our thanks will always be with you, and our thoughts often of you, monsieur."