general understanding of what means should be employed.
Then, too, all the aircraft were new, having been shipped to Camp Lincoln and there assembled, and it was desired to test them before taking the dangerous flights over the German lines. So the airmen would have to spend some time—perhaps half a week—in preliminary work.
Meanwhile the great cannon would keep up its deadly, though, from a military standpoint, useless work.
And so began the preparation, if such it might be called. Every one, from the most daring "ace" to the humblest kitchen helper in the camp, was anxious for the day when it could be said that the gun was out of commission, or guns, if, as was likely, there was more than one. But the men in command knew the value of thoroughness. There must be no failure through lack of making proper plans.
But at last everything was in readiness. The planes had been tested, keyed up, and the motors run until every part of them was humming like a top. Each man felt confidence, not only in himself but in his craft, and that meant much. There were several types for the fliers to use, single-seaters, the big bombing craft, those equipped for slow flying and from which
