"Yes. But I still think Shopton is somehow involved in the custom violations. I'm going to put one of my best men on the ground here, and go to the border myself."
"Well, I'll be ready to start in a few days," said Tom, as the government agent departed.
For the next week our hero and his chum were busy completing work on the great searchlight, and in attaching it to the airship. Koku helped them, but little of the plans, or of the use to which the big lantern was to be put, were made known to him, for Koku liked to talk, and Tom did not want his project to become known.
"Well, we'll give her a trial to-night," said Tom one afternoon, following a day of hard work. "We'll go up, and flash the light down."
"Who's going?"
"Just us two. You can manage the ship, and I'll look after the light."
So it was arranged, and after supper Tom and his chum, having told Mr. Swift where they were going, slipped out to the airship shed, and soon were ready to make an ascent. The big lantern was fastened to a shaft that extended above the main cabin. The shaft was hollow, and through it came the wires that carried the current. Tom, from the cabin below, could move the lantern in any direction, and focus it on any spot he pleased.
