Johnny's eyes rounded with surprise. He wanted to ask how they had come to suspect Mateo when they had seemed so unsuspicious, but he let it go. "There's another one, named Schwab, over in Mexico where we always went," he divulged. "He's the one Cliff got those papers from--whatever they were. And he's the one that expects to get some money in the morning. I heard that much. I--I could get him, too," he added tentatively. "Out of Mexico?" Captain Riley stirred slightly in the chair. "Yes, sir. I'm pretty sure I could. I was planning to nab him, if you'd let me." "You mean you could bring him--as you brought this man Lowell?" Johnny's lips tightened. "If I had to--yes, sir. I'd knock him on the head same as I did Cliff. Only I wouldn't hit quite so hard next time." Captain Riley bit his lip. "Better hit hard if you hit at all," he advised. "That's a very good rule to remember. It applies to a great many things." Then he straightened his shoulders a bit and called his orderly, who again impressed Johnny with his military preciseness when he stood at attention and saluted. Captain Riley's whole manner seemed to stiffen to that military preciseness, though Johnny had thought him stiff enough before. "Detain this man," he commanded crisply, "until further orders. If he is hungry, feed him; and see that he has a decent place to sleep. The petty officers' quarters will do." He watched the perturbed John Ivan Jewel depart under guard, and his eyes were not half so stern as his tone had been. Then he reached for his desk 'phone and called up the repair shop. "Run that Thunder Bird plane into the shop and repair it to-night," he commanded. "You will probably need to shift motors, but preserve the present appearance of the plane absolutely. It must be ready to fly at sunrise." Then, being all alone where he could afford to be just a human being, he grinned to himself, "So-ome boy," he chuckled. "Hope he doesn't lose any sleep to-night. So-ome boy." CHAPTER TWENTY-FOUR THE THUNDER BIRD'S LAST FLIGHT FOR JOHNNY Over North Island the high, clear notes of the bugle sounding reveille woke Johnny. Immediately afterward a guard appeared to take him in charge, from which Johnny gathered that he was still being "detained." He did not want to be detained, and he did not feel that they had any right to detain him. He flopped over and pulled the blankets over his ears. "Here, you get up. Captain wants you brought before him right after chow, and that's coming along soon as you can get into your pants. You better be steppin'." "Aw, what's he want to see me for?" Johnny growled. It would be much pleasanter to go back to his dream of Mary V. "Why, to shoot you, stupid. Whadda yuh think?"