Gardner Dozois: The Years Best Science Fiction 23rd Annual Collection (2006)

He was interrupted by the roar of a crowd, which had gathered just outside the firehouse. Spur froze, momentarily bewildered. They couldn't still be playing baseball, could they? Then he thought that the burn must have changed direction. It had careened down the ridge faster than it had any right to, an avalanche of fire that was about to incinerate the Commons and there was nothing he could do to fight it; in the nightmare, he wasn't wearing his splash pack. Or his fireproof field jacket. Spur shuddered. He wasn't fit to lead, to decide what to let burn and what to save. He was weak and his soul was lost in darkness and he knew he shouldn't be afraid. He was a veteran of the firefight, but fear squeezed him nonetheless. "Are you all right, son?" His father rested a hand on his shoulder. The burn licked at boulders and scorched the trees in the forest he had sworn to protect.

"DiDa," he whispered, leaning close to his father so no one else would hear, "what if I can't stop it?"

"You'll do your best, Prosper," he said. "Everyone knows that."

As they rushed out of the firehouse, they could see smoke roiling into the sky to the northwest. But the evil plume wasn't what had stunned the crowd, which was still pouring out of the communion hall. A shadow passed directly overhead and, even in the heat of this disastrous afternoon, Spur was chilled.

Silently, like a miracle, the High Gregory's hover landed on Littleton Commons.

Fifteen

Men go to afire for entertainment. When I see how eagerly men will run to afire, whether in warm or cold weather, by night or by day, dragging an engine at their heels, I'm astonished to perceive how good a purpose the level of excitement is made to serve. - Journal, 1850

"There's a big difference between surface fire and crown fire," said the Pendragon Chromlis Furcifer to the L'ung assembled in the belly of the hover. "Surface fires move along the forest floor, burning through the understory." She was reading from notes that scrolled down her forearm.

"Wait, what's understory again?" asked Her Grace, Jacqueline Kristof, who was the youngest of the L'ung.

Memsen pinched the air. "You mustn't keep interrupting, Your Grace. If you have questions, query the cognisphere in slow time." She nodded at Penny. "Go ahead, Pendragon. You're doing a fine job."

"Understory is the grass, shrubs, dead leaves, fallen trees - that stuff. So anyway, a surface fire can burn fast or slow, depending. But if the flames climb into the crowns of the trees, it almost always rips right through the forest. Since the Transcendental State doesn't have the tech to stop it, Spur will have to let it burn itself out. If you look over there…" The group closed around her, craning to see.

Spur had been able to ignore Penny for the most part, although Cape kept scowling at the L'ung. Memsen had explained that Penny's research topic for the trip to Walden was forest fires.

The hover was not completely proof against smoke. As they skirted the roiling convection column of smoke and burning embers, the air inside the hover became tinged with the bitter stench of the burn. This impressed the L'ung. As they wandered from view to view, they would call to one another. "Here, over here. Do you smell it now? Much stronger over here!"

They had dissolved the partitions and made most of the hull transparent to observe developments in the burn. Just a single three-meter-wide band ran solid from the front of the deck to the back as a concession to Spur and Cape; the L'ung seemed totally immune from fear of heights. Spur was proud at how Cape was handling his first flight in a hover, especially since he himself felt slightly queasy whenever he looked straight down through the deck at the ridge 1,500 meters below.

From this vantage, Spur could see exactly what was needed to contain the burn and realized that he didn't have the resources to do it. Looking to the north, he was relieved that the burn hadn't yet crossed Lamana Ridge Road into the wilderness on the far slope. Barring an unforeseen wind change or embers lighting new spot fires, he thought he might be able to keep the burn within the Littleton valley. But he needed dozens of trained firefighters up on the ridge to defend the road as soon as possible. To the west, he saw where the flames had come close to the Sukulgundas' farmstead, but now the burn there looked to be nothing more than a surface fire that was already beginning to gutter out. Peace and the team with Engine No. 4 should have no trouble mopping up. Then he'd move them onto the ridge, not that just three people and one ancient pumper were going to be enough to beat back a wall of flame two kilometers wide.

"Where you see the darker splotches in the forest, those are evergreens, the best fuel of all," said Penny. "If they catch, you can get a blowup fire, which is what that huge column of smoke is about."

To the east and south, the prospects were grim. The burn had dropped much farther down the ridge than Spur had expected. He remembered from his training that burns were supposed to track uphill faster than down, but the spread to the north and south, upslope and down, looked about the same. As soon as the first crews responded from nearby Bode Well and Highbridge, they'd have to deploy at the base of the ridge to protect the Commons and the farmsteads beyond it.

The head of the burn was a violent crown fire racing east, beneath a chimney of malign smoke that towered kilometers above the hover. When Spur had given the Ezzats and Millisaps permission to save as much as they could from their houses, he'd thought that they'd all have more time. Now he realized that he'd miscalculated. He reached both families using the hand-tell and told them to leave immediately. Bash Ezzat was weeping when she said she could already see the burn sweeping down on her. Spur tried Comfort's tell again to let her know that her farmstead was directly in the path of the burn, but still got no answer.

"DiDa," said Spur gently. He'd been dreading this moment, ever since he'd understood the true scope and direction of the burn. "I think we need to pull Livy and her people back from the creek to Blue Valley Road." He steeled himself against anger, grief and reproach. "There's no time to clear a line," he went on. "At least not one that will stop this burn."

"I think you're right," Cape said, as casually as if they were discussing which trees to prune. "It's simple, isn't it?"

Relieved but still anguished, he hugged his father. "I'm sorry, DiDa." He couldn't remember the last time they had been this close, and was not surprised that Cape did not return his embrace. "Should we send someone to the house?" he said, as he let his father go. "Have them pack some things? Papers, furniture - there's still a little time."

"No." Cape turned and cupped his hands against the transparent hull of the hover. "If I did something silly like that, the farm would burn for sure." He lowered his face into his hands as if to shade the view from glare. But the afternoon sun was a dim memory, blotted out by the seething clouds of smoke.

Spur shut his eyes then, so tight that for a moment he could feel muscles on his temple quiver. "Memsen," he said, his voice catching in his throat, "can you put us down by the Sawat-dees' house?"

Spur got more resistance from Livy than he had from his father. It took him almost ten minutes to convince her that trying to dig a firebreak along Mercy's Creek was not only futile but also dangerous. When it was over, he felt drained. As he flopped beside Cape onto one of the chairs that Memsen had caused to flow from the deck of the hover, the hand-tell squawked. He groaned, anticipating that Livy was back with a new argument.

"Prosper Leung?" said a woman's voice.

"Speaking."

"I'm Commander Do Adoula, Fourth Engineers. My squad was on CR in Longwalk but we heard you have a situation there and we're on our way. We can be in Littleton in half an hour. I understand you're in a hover. What do you see?"