“How soon can you get ready, boys?” asked Havens. “My idea is,” he went on, “that you ought to get out of the hangar as soon as possible. We may be over-anxious regarding the matter, but it is my belief that you’ll be followed unless you get away secretly. Now, you boys all go to bed in the bunks in the hangar and I’ll attend to the details. When the tent and provisions are on board, with plenty of gasoline, I’ll let you know. Then you can get away at once.”

The boys objected to going to bed, declaring that they were too excited to sleep, but at last, in deference to the wishes of Mr. Havens, they sought their bunks. An hour later Jimmie awoke to a sense of suffocation. Ben and Carl were sleeping soundly not far away and the great shed was very still.

As the boy sat up and sniffed the air a burst of flame showed at the front, sweeping fast toward the Louise and the Bertha.

CHAPTER II.

A SHOT IN THE NIGHT.

There was a fairly efficient fire department at the Havens’ hangar, and by the time Jimmie was out of his bunk, rolling his chums out on the floor, two streams of water were playing upon the flames.

Contrary to the expectation of the incendiaries, there had been several workmen busy about the office building packing provisions into the smallest space possible and tying oiled silk tents and clothing for transportation on the flying machines. Consequently when the fire burst out at the hangar there was little delay in getting out the firemen.

There were thousands of dollars’ worth of property in and about the office building and hangar, and Mr. Havens not only maintained an efficient corps of fire fighters but also kept his possessions there well insured. The fire was extinguished before any damage had been done except to one wall of the hangar.

After the danger was entirely over Mr. Havens and the three boys gathered in the private room of the office building for the purpose of discussing the situation. It was easy to see that the boys were all greatly excited, and that Mr. Havens was decidedly angry.

“You see how it is, boys,” the latter said, “you’ll have to fight the Phillips and Mendosa gang from now until the two murderers are placed in the electric chair. I fully believe that it was the intention of their accomplices to not only destroy the aeroplanes but to cause your death. It is a desperate gang to battle with.”