What on Venus could have happened to Van Artevelde? The last radio message they had received, more than an hour ago, had said he and the patient took off successfully in an aircraft. What sort of aircraft could he be flying that would require an hour to cover eighty kilometers, with the wind?
Heemskerk could only draw the conclusion that the aircraft had been wrecked somewhere in Den Hoorn. As a matter of fact, he knew that preparations were being made now to send a couple of groundcars out to search for it.
This, of course, would be too late to help the patient Van Artevelde was bringing, but Heemskerk had no personal interest in the patient. His worry was all for his friend. The two of them had enjoyed chess and good beer together on his last three trips to Venus, and Heemskerk hoped very sincerely that the big blond man wasn't hurt.
He glanced at his watch again. X minus twelve. In two minutes, it would be time for him to walk up the ramp into the G-boat. In seven minutes the backward count before blastoff would start over the area loudspeakers.
Heemskerk shook his head sadly. And Van Artevelde had promised to come back triumphant, with a broom at his masthead!
It was a high thin whine borne on the wind, carrying even through the walls of his spacehelmet, that attracted Heemskerk's attention and caused him to pause with his foot on the ramp. Around him, the rocket mechanics were staring up at the sky, trying to pinpoint the noise.
Heemskerk looked westward. At first he could see nothing, then there was a moving dot above the mountain, against the indigo umbrella of clouds. It grew, it swooped, it approached and became a strange little flying disc with two people standing on it and something sticking up from its deck in front of them.
A broom?
No. The platform hovered and began to settle nearby, and there was Van Artevelde leaning over its rail and fiddling frantically with whatever it was that stuck up on it—a weird, angled contraption of pipes and belts topped by a whirring blade. A boy stood at his shoulder and tried to help him. As the platform descended to a few meters above ground, the Dutchman slashed at the contraption, the cut ends of belts whipped out wildly and the platform slid to the ground with a rush. It hit with a clatter and its two passengers tumbled prone to the ground.
"Jan!" boomed Heemskerk, forcing his voice through the helmet diaphragm and rushing over to his friend. "I was afraid you were lost!"