Tom poked his head around the corner of the doorway and quickly jerked it back again. Quent Miles was hurrying down the street.
"Wonder what he's doing around here?" whispered Astro, watching the black-clad spaceman pass directly opposite them and continue down the street, seemingly unaware that he was being watched.
"He must be heading for the evacuated section," said Tom.
"How do you figure that?" asked Astro, as they peered cautiously around the edge of the doorway.
"He's wearing his oxygen mask."
"Come on!" said Astro. "Let's find out what that heel is up to."
Hugging the buildings, the two cadets walked down the street, following Miles. There was a puzzled frown on Astro's face as he stared at the spaceman, a hundred feet away. "I swear, Tom," he complained, "I'm about to bust a rocket. Every time I see that guy, I think I know him, but when I try to pin it down, it slips away from me."
"Watch it!" cried Tom. "He's stopping."
The boys ducked behind a deserted jet car as Quent Miles suddenly spun around to stare suspiciously back down the street.
"I don't know if he saw us or not," whispered Tom.