"We'll have to put in plenty of overtime," d.i.c.k said finally. "I think we can make it all right, but it will put a load on the staff. What do you think, boys?"

Rick joined in the chorus of yeas! If every other section could be ready, electronics would be, too.

"There's your answer, Doctor," d.i.c.k Earle said.

"Thank you. Now I ask for a unanimous opinion. Can we fly our winged horse on this new schedule?"

The shout sent Prince Machiavelli skittering up to Rick's neck and down inside his shirt.

Pegasus was committed to flight!

The problem of the Earthman was looming larger, Rick thought. The next target for the saboteur would be his own project. The very idea made him a little ill. Pegasus was too big, too important to be sabotaged! But he recalled ruefully, Orion had also been too big and important. Of course no trace of the Earthman had been found by the Orion staff, but the servomotor theft seemed to tie the Earthman to the disaster.

"I'm going to be up to my neck in spaghetti," Rick told Scotty when they met for supper. "I don't see how there'll be much chance to look for the Earthman."

"It should be better than ever," Scotty objected. "For the first time, you'll be right on the target."

That was true, Rick agreed. He hadn't looked at it in quite that way.

"What are your plans?" he asked.

"I'm going to concentrate on the warehouse. Remember what Colonel Preston said about the clerks? They swore they hadn't seen any unauthorized person entering while they were watching the shoot."

"But they couldn't have kept an eye on the warehouses," Rick objected.

"Anyone could have sneaked in."

Scotty shook his head. "I don't think so. Of course they watched the shoots, but you can also bet they were turning pretty often to look at the warehouses. They must have seen some activity. Otherwise, why would they say _unauthorized_ persons?"

"I can't imagine," Rick admitted. "What's your idea?"

"The only people who could go in and out without being noticed particularly, or challenged, would be members of the service staff."

"Like the postman?"

"Yes. Or telephone repairmen, or power men, or janitors, or plumbers.

There must be a dozen different kinds of people who have the run of the base because of their duties. I'm going to keep an eye open to see who goes in and out regularly--and Luis Hermosa is going to help."

"Luis? How can he help?"

"The fire station has a good view of the warehouses. You know how firemen are. When they're not cleaning or making repairs, they like to sit out front. Luis is out of the infirmary and back on limited duty, and another pair of eyes will help. Once we establish who has free run of the warehouses, I'll try to see which of them have any connection with Mac or Pancho. Okay?"

"Sounds good," Rick agreed. "And I'll keep my red-rimmed eyes wide open down at the pad, too. We'll get something on this Earthman yet!"

CHAPTER XIV

Check Pilot

Rick had joined in the enthusiasm for moving up the date of the Pegasus shoot, but as he gazed around the project he began to wonder if they hadn't all been carried away. There were parts and pieces everywhere. He couldn't begin to make heads or tails out of all the confusion.

Fortunately, he didn't have to. Now that zero hour was closer, the confusion turned into order like a miracle.

Rick continued to work on the drone section. The drone mechanism was actually in two parts. The part on which Rick worked was to be installed in the rocket. The other part would be installed in the blockhouse where it would be operated by the drone pilot.

d.i.c.k Earle maintained a constant check on the work, and Frank Miller was always on hand. Miller had designed the drone system, based on principles developed by Dr. Bond and other pioneers. As Rick worked, he learned how the system operated. The drone pilot in the blockhouse sat at a panel on which normal plane controls were duplicated in miniature.

In front of him were elaborate radar screens. The drone pilot watched the radar screens and "flew" the rocket. As he moved the controls, code signals were transmitted and picked up by the unit inside the rocket where they were translated into mechanical movements of the rocket's control surfaces by the number of servomotors.

Rick had to consult with Frank Miller several times, and he began to grow apprehensive about the design engineer's health. Miller's face was gray with pain most of the time, and he often held both hands on his stomach when he thought no one was watching. Rick mentioned it to d.i.c.k Earle.

"I know," Earle said. "I've tried to get him out of here, at least to see the doctor, but he won't go. He says there'll be plenty of time when the shoot is over."

Then, in the coolness of a Scarlet Lake dawn, Lieutenant Colonel Jerry Lipton, one of the Air Force's crack pilots, arrived in one of the latest jet trainers. The staff of Pegasus greeted him and got to work at once. The jet trainer would take the place of the rocket for testing purposes.

This was the field test of the drone system--the only time it would be checked in actual flight until the day of use. While Rick, Dr. Bond, and d.i.c.k Earle installed the flying portion of the system in the plane, Gee-Gee Gould, Phil Sherman, and Charlie Ka.s.sick installed the control section in the blockhouse.

The installation took all day. The sun was dropping behind the blockhouse when final checks were made.

A guard arrived at d.i.c.k Earle's summons and mounted watch on the plane.

Another guard was always on duty at the blockhouse, and still another at the now fenced-in pad where the sections of Pegasus were being a.s.sembled.

The staff secured for the night. Test flight was scheduled for midmorning. Rick had asked, and been given permission, to see the test from the blockhouse. Jerry Lipton would run the blockhouse controls.

Another test pilot, who was driving up from the big test station at Muroc Dry Lake, was due in the morning to serve as check pilot in the drone-controlled jet trainer.

Rick went back to his barracks filled with excitement. The flying horse was about to try his brains, if not his wings. Zero hour was getting close.

When Scotty asked how things were coming, Rick described their activities in enthusiastic detail. But Scotty only grinned. "I didn't want a connection-by-connection description of each circuit in the rocket. What I meant was, is there anything new on the Earthman?"

Rick shook his head. "I've kept my eyes open, but everything's normal as Sunday at home."

Scotty got serious. "Better be alert every second. Don't forget, boy.

You're now sitting on the target."

"You're dead right," Rick agreed, somewhat subdued. "How are you doing?"

"Not bad. I have a list of eight people who go in and out of the warehouses regularly. They go in and out so often none of them would even be noticed. Also, I think I know how the transistors and servos were taken out."

Rick stared. "Honest?"

"I think so. Ever notice how the cleaning men work? They have carts. Big ones, made of metal. At one end is a kind of well, for brooms, mops, and the vacuum cleaner wand and tubes. But most of the cart is just a metal box. The sides open. They carry rags, soap, that sawdust stuff for the floor, and so on. Get the picture? The warehouse janitor could have had empty boxes all ready inside his cart. Then, in about two minutes flat, he could have changed them for full boxes."

"You've got something there," Rick said with excitement. "Any idea which janitor?"

Scotty nodded. "The one who gets the warehouses to clean most often is a character named Dusty Rhoads. He's in and out a dozen times a day, pushing his wagon. He empties the waste cans and sweeps up and generally puts things in order. No one even notices him."

"Have you reported this to Preston or John Gordon?"