"Don't know who they are," he explained. "We'll be careful. They may be
all right and then again they may not be."

He sent the machine higher again and a few minutes later the craft hung
directly above the troops below.

"I can't make out those uniforms," declared Chester.

"Nor I," said Hal. "However, they are not Austrian, I can see that. We'll
take a chance and go down."

Again the machine moved closer toward the earth, and a few minutes later
came to rest upon the ground a short distance from the main body of
troops. A squad of men, let by an officer, came hurriedly forward,
covering the four friends with their rifles.

"By Jove!" exclaimed Colonel Anderson. "You must have miscalculated a
bit, Hal. I recognize them now."

"Well, who are they?" demanded the lad.

"Montenegrins."

"Good," cried Chester. "Then we are among friends."

The four friends raised their hands in token of surrender as the officer
and his men came toward them. A few paces away, the officer halted and
addressed them.