“I love you, too. Good night.” Sam found himself yawning, too. Even if she had been interested, he wasn’t sure he could have managed two rounds so close together. He wasn’t a kid any more.

He rolled over onto his left side. His behind brushed against Barbara’s. They chuckled and moved a little farther apart. He popped out his dentures, set them on the nightstand. Inside a minute and a half, he was snoring.

Jens Larssen most cordially cursed the United States Army, first in English and then in the fragmentary Norwegian he’d picked up from his grandfather. Even as the oaths fell from his lips, he knew he was being unfair: if the Army hadn’t scooped him up as he was making his way across Indiana, he might well have got himself killed trying to sneak into Chicago as the Lizard attacks on the city rose to a climax.

And even now, after General Patton and General Bradley had pinched off the neck of that attack, nobody would let him fly out to join the rest of the Met Lab team in Denver. Again, the brass had their reasons-save for combat missions, aviation had almost disappeared in the United States. Human aviation had almost disappeared, anyhow. The Lizards dominated the skies.

“Hellfire,” he muttered, clinging to the rail of the steamer Duluth Queen, “the damn Army wouldn’t even tell me where they’d gone. I had to go into Chicago and find out for myself.”

That rankled; it struck him as security gone mad. So did everyone’s refusal to let him send on any word to the Met Lab crew. He couldn’t even let his wife know he was alive. Once more, though, the mucky-mucks had a point he couldn’t honestly deny: the Met Lab was America’s only hope of producing an atomic bomb like the ones the Lizards had used on Berlin and Washington, D.C. Without that bomb, the war against the aliens would probably fail. Nobody, then, could afford to draw any sort of attention toward the Metallurgical Laboratory or communicate with it in any way, for fear the Lizards would intercept a message and draw the wrong-or rather, the right-conclusions from it.

The orders he’d been given made just enough sense for him not to try disobeying. But oh, how he hated them!

“And now I can’t even get into Duluth,” he grumbled.

He could see the town, which lay by the edge of Lake Superior where it narrowed to its westernmost point. He could see the gray granite bluffs that dwarfed man’s houses and buildings, and felt he could almost reach out and touch some of the homes atop these bluffs, the taller business buildings that climbed the steep streets toward them. But the feeling was an illusion; a sheet of blue-gray ice held the Duluth Queen away from the Minnesota town that had given it its name.

Jens turned to a passing sailor. “How far out on the lake are we?”

The man paused to think. His breath came out thick as smoke as he answered, “Can’t be more than four, five miles. Up to less than a mouth ago, it was open water all the way in.” He chuckled at Larssen’s groan. “Some years the port stays open all winter long. More often, though, it’ll freeze for twenty miles out, so this ain’t so bad.” He went on his way, whistling a cheery tune.

He’d misunderstood why Jens groaned. It wasn’t at the cold weather; Jens had grown up in Minnesota, and spent enough time skating on frozen lakes to take for granted that water-even as massive a body of water as Lake Superior-turned to ice when winter came. But a month before, he could have gone straight into town. That ate at him. Probably the same blizzard that let Patton launch his attack against the Lizards had also finally frozen the lake.

In any other year, the Duluth Queen would have stopped sailing for the winter. The Lizards, though, had paid much more attention to knocking out road and rail traffic than to knocking out ships. Jens wondered what that meant about their home planet-maybe it didn’t have enough water for them to take shipping seriously as a way of getting things from, one place to another.

If that was so, the aliens were missing a trick. The Duluth Queen carried ball bearings, ammunition, gasoline, and motor oil to keep resistance to the Lizards’ strong in Minnesota; it would take back steel from Duluth and milled grain from Minneapolis to forge into new weapons and feed the people who fought and built.

Lots of little boats-boats small enough to haul across the ice, some of them even rowboats-clustered around the steamship. Deck cranes lowered crates to them and picked up others, with a lot of shouted warnings going back and forth with the goods. A quasi-harbor had sprung into being at the edge of the ice: crates from the Duluth Queen went back and forth toward town on man-hauled sledges, while others, outbound, were muscled onto the boats for transport out to the Queen.

Jens doubted the system was even a tenth as efficient as a proper harbor. But the proper harbor was icebound, and what the locals had worked out was a lot better than nothing. From his point of view, the only real trouble was that cargo was so much more important than passengers that he couldn’t get off the steamship.

The sailor came back down the deck, still whistling. Larssen felt like throttling him. “How much longer before you’ll be able to start moving actual real live people off?” he asked.

“Shouldn’t be more than another day or two, sir,” the fellow answered.

“A day or two!” Jens exploded. He wanted to dive into Lake Superior and swim the mile or so over to the edge of the ice. He knew perfectly well, though, that he’d freeze to death if he tried it.

“We’re doing the best we can,” the sailor said. “Everything’s screwed up since the Lizards, came, that’s all. Wherever you need to get to, people will understand that you’ve been held up.”

That this was true made it no easier to bear. Unconsciously, Larssen had assumed that because the Lizards had been beaten back from Chicago and he was free to travel again without the Army trying to tie him down, the world would automatically unfold at his feet. But the world was not in the habit of working that way.

The sailor went on, “Long as you’re stuck on, board, sir, you might as well enjoy yourself. The grub’s good here, and there aren’t many places ashore where you’ll find steam heat, running water, and electric lights.”

“Isn’t that the sad and sorry truth?” Jens said. The Lizards’ invasion had badly disrupted the complex web the United States had become, and pointed out the hard way how much every part of the country depended on every other-and how ill-equipped most parts were to go it alone. Burning wood to keep warm and depending on muscles-animal or human-to move things about made America feel as if it had slipped back a century from 1943.

And yet, if Jens ever made it to Denver, he’d get back to work on a project that seemed to belong at least a hundred years in the future. The world to come would spring into being amidst the obtrusive reemergence of the past. And where was the present? The present, thought Jens, who had a weakness for puns, is absent.

He went below, to get out of the cold and to remind himself the present still existed. The Duluth Queen’s galley boasted not only electric lights but a big pot of hot coffee (a luxury that grew rarer as stocks dwindled) and a radio. Jens remembered his parents saving up to buy their first set in the late twenties. It had felt like inviting the world into their parlor. Now, most places, you couldn’t invite the world in even if you wanted to.

But the Duluth Queen didn’t depend on distant power plants, now likely to be either wrecked or out of fuel, for electricity. It made its own. And so, static squawked and muttered as Hank Vernon spun the tuning knob and the red pointer slid across the dial. Music suddenly came out. The ship’s engineer turned to Larssen, who was getting a mug of coffee. “The Andrews Sisters suit you?”