Larson's Luck

Larson couldn't possibly have known what was going on in the engine room, yet he acted....
We moor in ten minutes, I said.
We were flying at reduced speed because of the heavy fog we had run into at the outer fringe of Earth's atmosphere. But I knew we were within forty or fifty miles of the Trans-Space base. I had counted the miles on this particular trip because of the load of radium we were carrying from the Venusian mines. I wouldn't draw a completely relieved breath until we were down and the stuff was in the hands of the commerce agents.
I eased my position slightly to relieve the pressure on my broken flipper and grinned at the pilot, Lucky Larson, the screwiest, most unpredictable void trotter who had ever flown for dear old Trans-Space.
You've been too good to be true this trip, I said, and it's a good thing. The chief told me that if you so much as thought about clowning around or stunting he was going to clip your wings for good.
Lucky grinned, an impish, devil-may-care grin that lightened up his freckled face and bunched the tiny wrinkles at the corners of his eyes. Then with characteristic abruptness he scowled.
That grandmother, he said disgustedly. Who does he think I am, anyway? Some crazy irresponsible madman who hasn't got enough brains to stay on a space beam?
That's just what he does think, I grinned, and you've given him plenty of reason to think it. You can't bring your crate in to the base without stunting around and showing off and risking your damn neck. That's why he sent me along with you this trip. Just to see that you act like a pilot—instead of circus acrobat.
A lot of good you'd do, Lucky mumbled. You got a broken arm. The only reason he sent you is because he didn't want to pay you while you was in the hospital so he cooks up this trip to get his money out of you. And say, he turned to me belligerently, when did I ever crack up a ship? When did I ever even dent one of the babies?
You haven't, I was forced to admit, but that's just because of that screwy luck of yours. But it won't last forever and one of these days it's going to run out just when you need it. So just remember—no stunting this trip or you'll be out of the strata for the rest of your natural life.