"Get your guns and see if you can pick 'em off," Hal instructed Chester
and Colonel Anderson. "I'll run this thing, but you fellows will have to
do the fighting."

"Suits me," responded Chester, examining his revolver carefully.

Colonel Anderson also nodded his agreement to this plan.

Hal now changed his course and the airship headed toward the south,
bearing off a trifle to the east, in a direction that he believed,
eventually, would land them in Serbia.

It became apparent now that the Austrian had not boasted of the speed of
his craft without reason, for he gained perceptibly.

"We can't out-run him, Hal," shouted Chester.

"Then we shall have to try something else," was the reply.

Abruptly he reduced the speed of the craft and the Austrians dashed in
range of the revolvers of the fugitives almost before they could have
realized it.

"Crack! Crack!"

Chester and Colonel Anderson had fired. There came a scream of pain from
behind and the Austrian craft wobbled crazily. A moment later a man
sprang to his feet, sought to retain his footing, threw up his arms and
went hurtling into space.