me," said the Captain. "I'll see what I can do for you," and the young officer, whose acquaintance Tom had made at the tests when the government was purchasing some aeroplanes for the army, hurried off.
He came back presently, and by his face the lads knew he had been successful.
"It's all right," he said with a smile. "General Waller countersigned the pass without even looking at it. He's so excited over the coming test of his gun that he hardly knows what he is doing. Come on in, boys. I'll go with you."
"Then they haven't tested his gun yet?" asked Tom, eagerly, anxious to know whether he had missed anything.
"No, they're going to do so in about half an hour. You'll have time to look around a bit. Come on," and showing the sentinel the countersigned pass, Captain Badger led the two youths into the proving grounds.
Tom and Ned saw so much to interest them that they did not know at which to look first. In some places officers and firing squads were testing small-calibre machine guns, which shot off a round with a noise like a string of firecrackers on the Chinese New Year's. On other barbettes larger guns were being tested, the noise being almost deafening.
