“It looks now as if we have a chance,” said Brigadier General Robert K. Evans. “The Germans will attack at daybreak and—by the way, what’s the matter with our wireless reports?” He peered out into the night which was heavily overcast—not a star in sight. He was looking toward the radio station a mile back on the crest of a hill where the lone pine tree stood that supported the transmission wires.
“Looks like rain,” decided the general. “Hello! What’s that?”
Plainly through purplish black clouds we caught the shrill buzz of swift-moving aeroplanes.
“Good lord!” cried Roy D. Chapin, chief inspector of aircraft. “The Germans! I know their engine sounds. Searchlights! Quick!”
Alas! Our searchlights proved useless against the thick haze that had now spread about us; they only revealed distant dim shapes that shot through the darkness and were gone.
“We must go after those fellows,” muttered General Evans, and he detailed William Thaw, Norman Prince and Elliot Cowdin, veterans of many sky battles in France and Belgium, to go aloft and challenge the intruders.
This incident kept the camp in an uproar half the night. It turned out that the strange aeroplanes had indeed been sent out by the Germans, but for hours we did not discover what their mission was. They dropped no bombs, they made no effort to attack us, but simply circled around and around through the impenetrable night, accomplishing nothing, so far as we could see, except that they were incredibly clever in avoiding the pursuit of our airmen.
“They are flying at great speed,” calculated A. F. Zahm, the aerodynamic expert of the Smithsonian Institution, “but I don’t see what their purpose is.”
“I’ve got it,” suddenly exclaimed John Hays Hammond, Jr. “They’ve sprung a new trick. Their machines carry powerful radio apparatus and they’re cutting off our wireless.”
“By wave interference?” asked Dr. Zahm.