"But they didn't down us, you want to remember," advised the other, in that confident way of his that always made his chums feel so much better.
"Now they're starting to pry at the doors, Frank, which means business. Hadn't we better be getting ready to make a start?"
"First of all I want you to stand by, and when I give the word fling both the large doors wide open," Frank told him. "After that, as I switch on the searchlight, so as to see what lies ahead, climb aboard to your regular place. And, Billy, please don't have any hitch in the program if you can help it!"
"Depend on me, Frank," said the other, slipping away in the darkness that now filled the interior of the big hangar.
Frank mounted to his seat. As no flight of consequence was intended, he did not bother donning the head shield he always carried with the machine, his gloves alone being deemed necessary for the occasion, though both of them had wisely secured their fleece-lined leather jackets. Just as Billy had said, Frank was so familiar with every lever and stay, as well as with the engine, that, with his eyes blindfolded, he could have manipulated the intricate working parts.
Quickly he adjusted things to his liking with a deftness that left nothing to be desired. The fact that those unseen parties on the other side of the door were becoming more insistent with every passing second did not seem to disturb Frank at all; for he knew very well they could not stop his departure now.
When, presently, he had finished his simple preparations and everything was ready for the grand finale, he gave the signal that Billy was expectantly awaiting.
Immediately both wide doors flew back, for the boys had arranged things so that it required but a simple movement to accomplish this. Then Billy hustled toward the seaplane, which no longer stood there like a black shadow; for Frank had, with the pressure of his finger, caused the powerful searchlight placed in the bow of the remarkable craft to flood the space in front of the hangar down to and out on the water of the harbor.
Billy swung himself aboard almost in the twinkling of an eye. Then a lever was manipulated and with a rush the monster seaplane started. Even as it left the shelter of the building, Billy, hanging on with nervous hands, could see several figures in the dazzling flood of white light spring wildly aside so as to avoid being crushed by the oncoming giant seaplane as it tore down the inclined track leading to the water.
