"And talk over how we're goin' to get at the sheep stealer," went on Fred.

So it was decided that on Monday the boys would go for a hunt and map out their plans. But they did not know what was to happen in the meantime to help solve the problem for them.


CHAPTER IV

AN AVIATOR APPEARS

"Hello, who's that talkin' to father?" exclaimed Jerry next morning as he and Fred came back from the range where they had been having a target contest to try out the service revolvers Captain Crawford had lent them.

Captain Crawford called the boys over and introduced the stranger, a tall, trim-built young man, as Mr. Hawke.

"I'm sure you boys will like Mr. Hawke," he said. "He's from the military aviation school at Fort Omaha, and knows how to build aeroplanes."

This was enough to make the boys look upon Hawke as a friend and hero, even if he hadn't smiled encouragingly and held out his hand.

"I'm sure I'm going to like you too, boys, and I'm glad to know you're interested in aviation. I always like to see boys up-to-date."