MEL GRAY TOOK ONE SLOW step forward, but Ward's sharp, "Stow it! A guard," stopped him. The Martian worked back up the furrow. The guard, reassured, strolled back up the valley, squinting at the jagged streak of pale-grey sky that was going black as low clouds formed, only a few hundred feet above the copper cables that ran from cliff to cliff high over their heads.
"Another storm," growled Ward. "It gets worse as Mercury enters perihelion. Lovely world, ain't it?"
"Why did you volunteer?" asked Gray, picking up his hoe.
Ward shrugged. "I had my reasons."
Gray voiced the question that had troubled him since his transfer. "There were hundreds on the waiting list to replace the man who died. Why did they send me, instead?"
"Some fool blunder," said Ward carelessly. And then, in the same
