"Sure," said Chester. "I believe you have guessed right. I am sure the place is filled with ammunition. Now if we could just dispose of the guards and place a time fuse—"
"It would be a hard blow to the Germans," Hal agreed. "We'll try it."
Still cautiously they approached. A guard arose from in front of the building. He stretched his arms. Apparently he had been asleep. Then he sat down again.
"We'll wait a minute," Hal whispered. "Perhaps he'll doze again."
Fortune was with the boys. A few moments later there came the sound of a gentle snore. The man was asleep. Immediately the lads sprang to action. Quickly they dashed across the open space to the side of the large building, which was made of wood and seemed to be nothing more than a huge barn.
Chester stopped beside the guard and raised his revolver. He hesitated a moment and then lowered the weapon.
"Let him be," he muttered. "He won't be with us long anyhow."
Hal, in the meantime, had been exploring the barn. Coming back he picked up the guard's rifle.
"I can pry a board loose with this," he told Chester, in a whisper.
This proved easier work than it looked. The board came loose without much trouble. Hal disappeared inside.