I couldn't help thinking how safe the people at Deucalion had thought they were. So every evening I went out and made rounds, just before sundown, and then later, in the dark, watched for any signs of movement out on the plains. I never saw anything, of course.

I made night rounds and went into the cook shack to find some coffee. I got a cup. The place was deserted, so I sprawled out and relaxed. Then Eileen came in and took off her helmet.

"I wasn't very nice to you the other night," she said. "I'm sorry -"

"It's okay."

"Sure." She got herself a cup and sat next to me. "Ice Princess all bedded down?"

"I wish you wouldn't talk about Erica that way."

"Sorry, but she is and you know it. She have a headache or what?"

"Eileen, for heaven's sake -"

"What are you so nervous about?" she asked. "Look. We're adults, we're the same age, and we turn each other on. Why shouldn't we do something about it? Like this." She leaned toward me and kissed me.

We set the coffee cups down and tried that again. After a while she reached for the tab on the big spiral zipper on my pressure suit.

"Maybe we better open the inner door to the air lock," I said.

"I already left it open."

There wasn't any conversation for a long time her that.

I didn't like myself very much the next day. I kept telling myself there was no harm done. Erica hadn't lost anything. I still loved her. She had no use for me. Nothing was changed between us. And the rest of it. Every man has his own set of excuses, and mine weren't very original.

The work went on. Erica and Drury worked every day, getting the drill string sent down just right, making certain the bomb would fit in the drill casing and go smoothly to the proper place. The drill could only work when the sun was up, of course; there weren't enough batteries and fuel cells to power it at night. But from before dawn to that last bit of sun, the crew was working, and so was Erica.

It left me a lot of time with Eileen. She'd look me up, "just to keep me company," she said, and sit with me on guard watches. When I was on watch we just talked. She'd never been to Earth, of course, and I found myself telling her a lot of things I'd told Erica. Eileen was a good listener.

Then came the day: the hole was finished. Erica lowered the bomb into the shaft. It took all day and part of the night to get it placed right. Then the drill crew pumped mud in on top of it to seal in the blast.

"It's topped up," Tex said. "Our job's done."

Erica brought in her detonator. It was built into a radio chassis. "I suppose there ought to be some kind of ceremony," she said. "Here goes." She threw two switches, and three lights glowed on the box.

"It's armed," Erica said. A broad grin broke out on her face. "It really worksl Nothing can stop it now. Let's tell the Skipper!"

It took an hour to set up the relay link. Erica told Commander Farr what we'd done.

"And you're sure everything is set?" Farr demanded.

"Yes, sir," Erica told him. "The responder worked, and that shows we have communications with the device. Now it will detonate when I send the right signal. The bomb can't be disarmed unless you know the proper frequencies and codes, and I've allowed no one to examine the detonator. I didn't even choose the final frequencies until this morning."

"And you've got the detonator under guard?" Farr said.

"Certainly."

There was a long pause on the other end. Then Farr said, "Okay. We'll go with the plan. I want that thing to go off exactly at thirteen hundred Mars Zulu the day after tomorrow. That's 5:00 A. M. your time. Not tomorrow, the day after, at 5:00 A.M. your time. Understood?"

"Yes, sir," Erica said.

"Good. That will be late afternoon at Marsport. We'll start broadcasting the message four hours before Go. An hour later we'll have to reveal your location. You run like hell as soon as she goes. That okay with you?"

"Yes," Erica said.

"All right," Farm said. "There's a lot riding on this. The big uprisings will come when the ship gets telephotos of that volcano going up and broadcasts them all over Mars. We're telling the miners and the other labor clients that the Project will be the first thing Free Mars will do. We're telling them their kids will be able to go take free land and live on it without all the expensive equipment they'd need to set up stations. And we're telling Earth to look close, because this could be what happens to your city if the Federation ever bombs one of ours."

"The big push is set for when we detonate the bomb?" I asked.

"Yes. Make sure it's on time. A lot of our people will have to surface, and if that thing doesn't go on time, we'll lose them."

"I understand," I said. "We'll sit guard on the detonator until it's time. How's Weinbaum doing with the negotiations?"

"Still delays. He thinks the Regents are waiting to see which way the wind blows. They'll come over if there's a general uprising, and if Earth doesn't look like bombing us out. Your little stunt ought to convince them. But you've got your secondary contacts just in case, right?"

"Yes, sir," I said. We'd been given the names and locations of some friendly station owners who'd hide us if the university people couldn't take care of us.

"All's well, then," Farr said. "This is it. In a couple of hundred hours it should be all over except for mopping up. GHQ out."

We carried the detonator into our blockhouse. Erica put it in her room.

"It seems too good to be true," I told her. "The war over -"

"Maybe," Erica said. She looked at the box with its glowing lights. "Anyway, my job's done. Nothing left to do but push a button at the right time. Until then, there's nothing I can do. It's over."

"Over for us." I thought about my buddies back at the Rim. Sarge would be leading an attack on Hellastown. I wondered how many would be killed.

"Garrett, I don't know how you've stood up to all this," Erica said. "I'm exhausted." She came over and put her arms around me. I held her close. We kissed, then again.

"I thought you were exhausted," I said.

"Not that exhausted. Who's outside?"

"Don's in the main room -" "Close the door. Then come here."

For a moment I thought about Eileen and I felt like a bloody heel, but then I wasn't thinking about anything at all.

We got our gear packed up and ready so we could run. After that there was nothing to do but wait. Erica and I stayed in the blockhouse. We had decided we wouldn't leave until the bomb went off. Later, Dr. Drury came in to have supper with us, while Doug sat in Erica's room with the detonator.

"It will be a magnificent thing," Drury said. "Magnificent. Making over a whole world. We can all be proud to have been part of it."

"It will take a long time," Erica said.

Drury nodded. "But we can speed it up. Melt off the polar caps -"

"They melt every summer anyway," I said.

"Not all of them. One melts, the other forms. But there are ways to keep them melted. And there are layers of both poles that never melt at all. We've studied this extensively. The Project can be speeded up enormously - and will be, when the Federation gets out of the way." “I’m glad we've got you people on our side,” Erica said. She waved at the blockhouse. "This would be a building to be proud of back home. Here it's just a temporary thing at a research camp. You've got enormous capabilities at the university."

"Thank you," Drury said. He raised his glass. "To the Project!"

We all drank to that.

"Of course," Drury said, "not everybody at New Chicago U is a Project enthusiast-"

"I'd have thought they would be," I said.

"Well, some think we don't understand Mars yet. They want to study it the way it is. They have a point; there's a lot to learn, a lot we can learn about Earth by studying Mars. We'll lose most of that information when the atmosphere begins to build up."