"And stand a good chance of getting shot," said Harold. "All bridges are guarded by soldiers with rifles, and we're not supposed to wait forever before we shoot either." Hugh and Bob had advanced to the spot where Harold was standing, and the three young men were grouped in a small circle.
"We never thought of that," said Bob sheepishly.
"Don't you know the United States is at war?"
"Of course we do."
"Well, then—. Sssh!" hissed Harold suddenly.
He peered intently down the railroad track. The figure of a man could be seen approaching. "Get back, quickly," whispered Harold, and the two boys flattened themselves against one of the big steel girders.
Nearer and nearer came the man. Harold stood motionless, his gun half raised and ready for instant action. Hugh and Bob looked on, fascinated. When about thirty yards distant the man stooped and appeared to be fumbling with something at his feet. Only for a moment, however, for he soon straightened up again and proceeded on his way.
"Halt!" commanded Harold sharply.
The man started, and then came to an abrupt stop.
"Come over here," Harold ordered.