During initial excursion on Sol 3 pilot/astronaut P. Connors will demonstrate on camera the following:

1. Colors of Martian landscape. Pan camera to show ground color and color of sky.

2. A Martian rock. Pick up moderate-sized rock, show it to camera. Explain that red color is from oxidation of iron-based minerals.

3. Temperature. Place thermometer on ground, show temperature (approximately 60–70 degrees Fahrenheit). Lift thermometer to eye level, show mercury dropping to zero or below. Explain that this phenomenon is due to low heat-retention capacity of thin Martian atmosphere.

4. Low air pressure. Open flask of ordinary water and let camera see that it immediately boils, even at temperature of zero or below, because of extremely low air pressure. Explain that same would happen to blood in body if not protected by pressurized hard suit.

5. Low gravity. Drop rock hammer to show that it falls more slowly than similar object on Earth, although faster than on Moon. (Contrast with earlier videotape of Astronaut Connors dropping same rock hammer when on Moon.]

6. Moon of Mars. If visible against daylight sky, show inner moon, Phobos, as it rises in west and crosses Martian sky in four hours. (It is not necessary to show entire four-hour transit. Use telescopic lens to show Phobos changing phase from "new" to "quarter" to "full." Tape can be edited to fit time allowed for broadcast.)

Jamie’s first instinct was to blink and rub his eyes, but his gloved hands bumped into the transparent visor of his helmet.

He stared at the rock. It was roughly two feet long, flat-topped and oblong. Its sides looked smooth, not pitted like most of the other rocks. And on one side of it there was a distinct patch of green.

He walked slowly around it, stepping over other small rocks and around the larger ones that were strewn everywhere. There was no green anywhere else. If I’d come up on the other side of it I’d never have noticed the color, he realized.

One rock. With a little area of green on one of its flat sides. One rock out of thousands. One bit of color in a world of rusty reds.

"Waterman, I do not see you," Vosnesensky called.

"I’ve found something."

"Come back toward the dome."

"I’ve found some green," Jamie said, annoyed.

"What?"

"Green."

"Where are you?"

"What do you mean? What is it?"

Jamie scanned the area around him. "Can you see the big boulder with the cleft in its top?"

"No. Where…"

"I can!" Joanna’s voice, brimming with excitement. "Just to the west of the second lander. See it?"

"Ah, yes," said Monique.

"This way," Joanna called.

Within a minute seven hard-suited figures appeared over the horizon just to the right of the cleft boulder. Jamie waved to them and they waved back.

Then he turned to the rock, his rock. Sinking slowly to his knees in the awkward suit, he leaned as close to it as he dared. He almost expected to see ants or their Martian equivalent busily scurrying around the ground.

What he saw, instead, was nothing but the powdery red sand and the rust-colored rock with a streak of green running down its flattish side. Christ, it looks like a little vein of copper that’s been exposed to the air. But then Jamie remembered that there was precious little oxygen in the Martian air. Enough to turn a vein of copper green? How long had the vein been exposed to the air? Ten thousand years? Ten million?

He leaned back on his haunches, his back to the approaching scientists.

"Where is it?" Joanna asked breathlessly.

"You look as if you’re praying," said Naguib’s reedy nasal voice. "Has it made a believer of you?"

"Don’t get too worked up," Jamie told them, looking up as they surrounded him and the rock. "I think it’s just a streak of oxidized copper."

Patel, in his yellow suit, clumsily got down on all fours to peer closely at the rock. "Yes, I believe that is so."

Joanna flattened herself beside him. "It might be just the surface coating of a colony that lives inside the rock. Like the microflora in Antarctica, they use the rocks for shelter and absorb moisture from the frost that gathers on the rock’s surfaces."

"I am afraid that it is nothing more than a patina of copper oxide," Patel said in his Hindu cadence and British pronunciation.

"We must make certain," said Monique, as calmly as if she were selecting a wine at a Paris bistro. Cool head, Jamie thought. Warm heart?

"We’ll have to take it inside…"

"Don’t touch it!" Joanna snapped.

"We can’t examine it in any detail out here," Jamie said. "We’ve got to bring it inside the dome."

"It is a possible biological sample," Joanna said with unexpected proprietary fierceness.

It’s copper oxide, thought Jamie.

Struggling to her feet, Joanna said, "I left my bio sampling cases when you called. They can maintain the ambient conditions inside them. If you bring the rock into the dome and it is suddenly thrust into our environment it would kill any native organisms that may be inside it."

Jamie nodded inside his helmet. She was right. Even though the chances were that the green streak was just a patina of copper oxide, there was no sense screwing up what might be the biggest discovery of all time.

"Please do not touch the rock," Joanna said. "Perhaps the rest of you could look around this area to see if any other rocks show such color. But do not touch them in any way. Do you all understand?"

Suddenly she was in charge. She wasn’t whispering anymore. The lovely little butterfly had turned into a dragon lady. What had started out as a geology field trip had turned into a biology session, and Jamie was just one of the flunkies. He felt his lips pressing into a tight angry line.

But he knew that she was right, and within her rights. He climbed slowly to his feet inside the cumbersome suit.

"Okay, boss," he replied with exaggerated deference. "To hear is to obey."

Joanna did not notice any humor in his crack. She detailed Monique to stand guard over the rock and ordered the other four to scour the area for other green spots. Connors, in his white hard-shell suit, stood to one side like a policeman, observing without participating. Joanna headed back toward the spot where she had left her sample cases, almost skipping across the rocky desert sands.

"Formidable." Monique’s voice sounded amused.

Jamie asked, "Say, were any of us smart enough to bring a camera with him?"

"I have a camera," said Toshima.

Jamie said, "Could you take a series of snaps of the rock and the region around it, from every angle — complete three hundred sixty degrees?"

"Most certainly."

Jamie thought back to hunting trips he had taken with his grandfather Al. They would always snap photos of each other with their catch — deer, rabbit, even the gila monster that Jamie had shot with his twenty — two when he had been no more than ten years old. His mother hated to allow Jamie to go hunting, but his father could not stand up to grandfather Al’s determination. "You can’t keep the boy cooped up in a library all the time," Al would argue. "He ought to be out in the open." Then, when they were alone together up in the wooded hills, his grandfather would tell him, "They’re trying to make you a hundred percent white, Jamie. I just want you to keep a little bit of yourself red, like you ought to be."

Jamie looked back at the rock, small enough to pick up and carry, especially in this light gravity. It’d make a great photo to send back to my grandfather, he thought. Me inside this damned suit with the rock for my trophy.

But he did not pose for Toshima’s camera.

Joanna returned after nearly half an hour with Vosnesensky at her side toting the two hefty silver-coated specimen boxes plus a pair of long slim poles that looked to Jamie like fishing rods. He knew that they were marker poles, with tiny radio beacons at their tips. He grinned to himself: Joanna’s even got the Russian working for her now.