"After our fight with the forest fire, when we were in camp at Fort Brady, they don't need to tell any member of the Wireless Patrol to be careful with fire," observed Lew. "But there are lots of people who do need to be warned." He dipped the canteen in the spring and passed on. "We're almost at the top," he said, "and I'm not sorry." "The light is already growing fainter," said Charley, "and it will bother us to see before so very long. It's going to get dark awful early to-night. We'd better hustle." They reached the summit of the pass and started down the other slope. The trail continued. At first it was choked with briars and bushes. But suddenly they found the trail open. It had been cleared of all obstructions and enlarged until it was several feet wide. Even the roots of the bushes had been grubbed out, so that the path was smooth and clean. The cut saplings and brush had been burned in the trail itself, but the work had been done so carefully that never a tree had been scorched. Even the marks of fire had been obliterated by the subsequent grubbing of the roots. "Bully good!" cried Lew, when he saw the path lying smooth and open before him. "The forest rangers have been making a fire trail of this old path. We can make great time here." He pushed on at top speed. Charley hung close at his heels. Neither boy said a word, each saving his breath for the task in hand; for with the packs on their backs even a down-hill trail was not easy. "We can go scout pace here," said Lew over his shoulder, and suiting his action to his words, he broke into a trot. Fifty steps he went at that gait, then walked fifty. Then he ran fifty more. So they went down the mountain in a mere fraction of the time it had taken them to ascend. But long before they reached the bottom, Lew dropped back to a steady walk. "We've got to save our wind for the climb up Old Ironsides," he said over his shoulder.