"They think we're friendly machines too, I believe," cried Jock, fingering the bomb release, ready to let go the first twenty-pound bomb on to the hangar. "Evidently, they can't make out our marks yet in the morning mist." "They'll soon think differently," replied the pilot, as, coming up at full speed, followed by the rest of the flight, he did a rapid nose-dive of two thousand feet. Then, flattening out to get a better control over his machine, he swept on again till nearly exactly over the first huge shed, and did another rapid nose-dive, the speed of which must have approximated one hundred and fifty miles an hour. "Look to it, Jock. Let go, man!" he yelled. Jock pulled the clutch of the bomb release, and the first missile fell almost into the middle of the huge building. He could not fail to hit it, for the target was so large, and Dastral had dropped to within three hundred feet of the high roof. "Swis-s-s-h----Boom-m-m-m----!" The explosion was terrific, and the huge roof of the building crumpled in with a crash. Scarcely fifteen seconds later Mac. dropped a petrol bomb into the half ruined building, and before the third plane could come into action, huge flames were bursting out everywhere. Then it was that the German anti-aircraft guns, discovering their mistake, turned their concentrated fire upon the first machine, which by this time was passing the second hangar, and about to repeat the process. "Spit! bang! boom!" And now the calm morning air was alive with bursting bombs and tearing shrapnel, while down below the distracted German soldiery, who had been waiting to house the returning Zeppelins, were rushing hither and thither, bewildered, whilst their officers were cursing those verdomt Englanders, who were always up to some new devilment. "Gott in Himmel! Gott strafe England!" came from many a mouth, and curses and cries of anger, coupled with shouts of defiance, rent the air. "Are you ready, Jock?" yelled Dastral, as they whirled through a screen of bursting shrapnel. "Yes, aye, ready!" came the response from the observer, whose eyes were lit with the light of battle. "Then let go!" "Boom-m-m!" went another bomb on to the second hangar, and so with the third and last. Within three minutes the whole of the structures of the three huge sheds were blazing fiercely, and, as the 'planes sped away, and climbed out of the line of immediate fire, they noted with joy that the flames from the third shed were larger and fiercer than those from the others. Huge forks of fire leapt three hundred feet into the air, and the heat was so fierce within a hundred feet that everybody within that zone of fire was scorched and fell fainting or dead. "Some blaze that, Jock!" cried Dastral as soon as they had left the fire curtain of shrapnel behind them, and could observe the burning mass properly.