The Menace From Earth

I don't know what the stuff was they had been giving me but my ears began to ring and I felt dizzy again.

Then he was leaning over me. "Runt," he said mournfully, "you sure give me a lot of grief."

"You're no bargain yourself, flathead," I answered with dignity.

"I suppose not." He looked me over sadly. "What are you crying for?"

I didn't know that I had been. Then I remembered why. "Oh, Jeff -- I busted my pretty wings!"

"We'll get you more. Uh, brace yourself. I'm going to do it again."

"All right." He did.

I suppose Hardesty & Hardesty has more rhythm than Jones & Hardesty.

It really sounds better.

Sky Lift

"All torch pilots! Report to the Commodore!" The call echoed through Earth Satellite Station.

Joe Appleby flipped off the shower to listen. "You don't mean me," he said happily, "I'm on leave—but I'd better shove before you change your mind."

He dressed and hurried along a passageway. He was in the outer ring of the Station; its slow revolution, a giant wheel in the sky, produced gravity-like force against his feet. As he reached his room the loud-speakers repeated, "All torch pilots, report to the Commodore," then added, "Lieu­tenant Appleby, report to the Commodore." Appleby uttered a rude monosyllable.

The Commodore's office was crowded. All present wore the torch, except a flight surgeon and Commodore Berrio himself, who wore the jets of a rocketship pilot. Berrio glanced up and went on talking: "—the situation. If we are to save Proserpina Station, an emergency run must be made out to Pluto. Any questions?"

No one spoke. Appleby wanted to, but did not wish to re­mind Berrio that he had been late. "Very well," Berrio went on. "Gentlemen, it's a job for torch pilots. I must ask for volunteers."

Good! thought Appleby. Let the eager lads volunteer and then adjourn. He decided that he might still catch the next shuttle to Earth. The Commodore continued, "Volunteers please remain. The rest are dismissed."

Excellent, Appleby decided. Don't rush for the door, me lad. Be dignified—sneak out between two taller men.

No one left. Joe Appleby felt swindled but lacked the nerve to start the exodus. The Commodore said soberly, "Thank you, gentlemen. Will you wait in the wardroom, please?" Muttering, Appleby left with the crowd. He wanted to go out to Pluto someday—sure!—but not now, not with Earthside leave papers in his pocket.

He held a torcher's contempt for the vast distance itself. Older pilots thought of interplanetary trips with a rocket-man's bias, in terms of years—trips that a torch ship with steady acceleration covered in days. By the orbits that a rocketship must use the round trip to Jupiter takes over five years; Saturn is twice as far, Uranus twice again, Neptune still farther. No rocketship ever attempted Pluto; a round trip would take more than ninety years. But torch ships had won a foothold even there: Proserpina Station—cryology labora­tory, cosmic radiation station, parallax observatory, physics laboratory, all in one quintuple dome against the unspeakable cold.

Nearly four billion miles from Proserpina Station Appleby followed a classmate into the wardroom. "Hey, Jerry," he said, "tell me what it is I seem to have volunteered for?"

Jerry Price looked around. "Oh, it's late Joe Appleby. Okay, buy me a drink."

A radiogram had come from Proserpina, Jerry told him, reporting an epidemic: "Larkin's disease." Appleby whistled. Larkin's disease was a mutated virus, possibly of Martian origin; a victim's red-cell count fell rapidly, soon he was dead. The only treatment was massive transfusions while the disease ran its course. "So, m'boy, somebody has to trot out to Pluto with a blood bank."

Appleby frowned. "My pappy warned me. ‘Joe,' he said, ‘keep your mouth shut and never volunteer.'"

Jerry gri

"How long is the boost? Eighteen days or so? I've got social obligations Earthside."

"Eighteen days at one-g—but this will be higher. They are ru

"How high? A g-and-a-half?" Price shook his head. "I'd guess two gravities."

"Two g's!"

"What's hard about that? Men have lived through a lot more."

"Sure, for a short pull-out—not for days on end. Two g's strains your heart if you stand up."

"Don't moan, they won't pick you—I'm more the hero type. While you're on leave, think of me out in those lonely wastes, a grim-jawed angel of mercy. Buy me another drink."

Appleby decided that Jerry was right; with only two pilots needed he stood a good chance of catching the next Earth shuttle. He got out his little black book and was picking phone numbers when a messenger arrived. "Lieutenant Ap­pleby, sir?" Joe admitted it.

"The-Commodore's-compliments-and-will-you-report-at­-once-sir?"

"On my way." Joe caught Jerry's eye. "Who is what type?"

Jerry said, "Shall I take care of your social obligations?"

"Not likely!"

"I was afraid not. Good luck, boy."

With Commodore Berrio was the flight surgeon and an older lieutenant. Berrio said, "Sit down, Appleby. You know Lieutenant Kleuger? He's your skipper. You will be co-pilot."

"Very good, sir."

"Appleby, Mr. Kleuger is the most experienced torch pilot available. You were picked because medical records show you have exceptional tolerance for acceleration. This is a high-boost trip."'

"How high, sir?"

Berrio hesitated. "Three and one-half gravities." Three and a half g's! That wasn't a boost—that was a pull­out. Joe heard the surgeon protest, "I'm sorry, sir, but three gravities is all I can approve."

Berrio frowned. "Legally, it's up to the captain. But three hundred lives depend on it."

Kleuger said, "Doctor, let's see that curve." The surgeon slid a paper across the desk; Kleuger moved it so that Joe could see it. "Here's the scoop, Appleby—"

A curve started high, dropped very slowly, made a sudden "knee" and dropped rapidly. The surgeon put his finger on the "knee." "Here," he said soberly, "is where the donors are suffering from loss of blood as much as the patients. After that it's hopeless, without a new source of blood."

"How did you get this curve?" Joe asked.

"It's the empirical equation of Larkin's disease applied to two hundred eighty-nine people."

Appleby noted vertical lines each marked with an accelera­tion and a time. Far to the right was one marked: "1 g— 18 days" That was the standard trip; it would arrive after the epidemic had burned out. Two gravities cut it to twelve days seventeen hours; even so, half the colony would be dead. Three g's was better but still bad. He could see why the Com­modore wanted them to risk three-and-a-half kicks; that line touched the "knee," at nine days fifteen hours. That way they could save almost everybody, but, oh, brother!

The time advantage dropped off by inverse squares. Eight­een days required one gravity, so nine days took four, ‘while four-and-a-half days required a fantastic sixteen gravities. But someone had drawn a line at "16 g—4.5 days." "Hey! This plot must be for a robot-torch—that's the ticket! Is there one available?"

Berrio said gently, "Yes. But what are its chances?"

Joe shut up. Even between the i

Kleuger turned to the surgeon. "Doctor, why not another half gravity? I recall a report on a chimpanzee who was centrifuged at high g for an amazingly long time."