It was a rocket, exploding in mid air directly in their course, and
it was to this that Hiram Dobbs had directed the attention of the
young aviator.





CHAPTER XX

ACROSS THE BORDER


"Did you see it?" asked Hiram, in a great state of excitement.

"Yes," responded Dave. "A rocket."

"See! See!" continued Hiram-"there's it second one!"

"Sure enough."

"Dave, this means something."

"For us, you think?"

"Yes, I do. Keep near the place where these rockets were fired,
Dave. Now then, what do you think?"

Dave slowed down. There was certainly something to his companion's
surmises or suspicions, whatever they were. Directly at the spot