Al went to its door, pushed aside the curtains—and stepped back.

What he saw stunned him!

CHAPTER XXVI
THE SKY SQUAD GOES INTO ACTION

Three men faced one another in the small compartment, made to look like a passenger ‘plane cabin.

As Al, at the curtained entrance, recognized the one facing him, all three turned to look.

With a mumbled apology Al backed out.

More than anything else, he wanted to get away, to see Bob!

The man who had faced him was Mr. Parsons, partner in the aircraft plant.

The man to his right was the mysterious stranger whom Al had seen in the supply room!

The third man——