Who's who, and what's where

He trusts David Chen's mathematics, fights the stick through a damaged re-entry, and lands Dragon dead-stick at White Sands, then crosses two hundred miles of broken country to find his wife Janet and their children alive in Colorado Springs. From there he moves into policy: he is summoned to Mount Weather, sends Chen the message that tests his loyalty, helps plan Operation Prometheus, and slowly comes around to the idea that recovery has to be shared with China. By the end of the draft he runs integrated launch operations and advises the Mars Colony.

After the landing she treats casualties in Albuquerque, then spends three weeks crossing the country to reach her husband Ben and their children, Katie and Tommy, in Boston. She becomes the medical liaison for a Brookline commune that votes to accept Chinese medical aid, and she flies to Vandenberg to see Mason off on Prometheus. She is not mentioned by name after that chapter. Early-draft inconsistency: from chapter 33 on, a different Sarah, Sarah Harrison, takes over the late-book role of the woman who keeps going back to space, and the text never connects the two.

His trajectory gets Dragon through the field, first by hiding among the debris and then by broadcasting old Chinese authentication codes and shutting the ship down completely to dodge incoming fire. Back on the ground he fills notebooks at Peterson with a plan to clear orbit, then accepts an offer to work in Beijing, where General Zhou gives him a supercomputer and, eventually, access to the platforms. He works out how to make the platforms clear debris, keeps that from the Americans under pressure, and at the Vancouver summit quietly hands Reynolds the real clearance schedules. Early-draft inconsistency: after chapter 30 he disappears, and his role as the Beijing mathematician is carried by Dr. Emily Chen, who the text treats as a separate woman.

He patches a hull breach, helps Reynolds wrestle the controls during re-entry, and afterward volunteers for convoy security. Months later, now described as a civilian whose brother went missing in Chicago, he rides a converted Minuteman III on Operation Prometheus and discovers that the Chinese platforms are clearing corridors and that China already has a new station in orbit. In the late chapters he is Colonel Mason: co-commander of the first debris-clearing crew, leader of the first crew back on the Moon (he names Tomorrow Base), a member of the Mars advance team, and husband to Lisa Chen and father of Hope Chen Mason. His first name is never given, and his rank and service history shift between chapters in this early draft.

He later commands the ten-block secure zone around Denver General, turning people away at checkpoints and refusing any deal with China on principle. Lisa Park and the hospital council outvote him on a fuel-for-knowledge trade, and when the generators fail he leads the evacuation to Peterson, where he eventually signs the Colorado Accord with General Zhou Ming. In the end he admits he would have cooperated sooner, and he finishes the book teaching cooperation to the next generation. Early-draft inconsistency: in chapter 2 he is a colonel at the Pentagon whom Zhou calls "General Foster," and by chapter 12 he is in Denver with no explanation of the move.

She follows Foster to Denver as his deputy, reports on checkpoints and refugees, and in the end reluctantly votes for the Chinese fuel deal against him before riding out with him in the evacuation convoy. Early-draft inconsistency: her rank moves between major and lieutenant colonel, and the draft uses the surname Harrison for several unrelated people, including a male hospital CFO in chapter 10, the CIA Director in chapter 22 (the text says he is no relation), a Secretary of State in chapter 30, and the widow Sarah Harrison later on.

He argues that Chinese aid is a trap built to create dependence, handles security for Lisa Park's neighborhood projects, and later serves as Foster's executive officer at Peterson during the Colorado Accord. He shares a surname with astronaut Sarah Williams, but the text never connects them.

He works with Foster on secure zones, later considers Chinese aid at Peterson, authorizes the offer that sends Chen to Beijing, and pushes for an America that controls orbit outright. He commands the Operation Prometheus briefing at Vandenberg.

He backs Operation Prometheus, asks Reynolds to reach Chen for intelligence, and offers Reynolds a seat on the National Recovery Council. At the Vancouver summit he announces the Vancouver Accords. Early-draft inconsistency: in chapter 27 General Conway addresses the President as "Madam President" while Mason calls the President "sir."

He hands Reynolds a satellite-free burst transmitter so he can reach Chen in Beijing. The text notes he is not related to Foster's major, one of several Harrisons in this early draft.

He takes the convoy through a Chinese-run checkpoint in Albuquerque, refuses to detour around a militia roadblock on I-25, and at Peterson lends Reynolds a Humvee and extra magazines to go find his family.

He warns both Reynolds and Foster that the autonomous platforms will fire on anything that moves, and shares their targeting data. Reports later place him under house arrest and then back in control, offering resources to anyone who accepts Chinese authority. In Beijing he gives David Chen everything he asks for, but decides that China will not share the platform positions with the Americans. Early-draft inconsistency: the text uses several Zhous and the lines between them blur, with General Zhou Ming described as the architect of China's recovery in chapter 30 and a Defense Minister Zhou, called the elder Zhou, in chapter 32.

He argues calmly that delay costs lives and invites Foster to tour the Chinese zones. The text later says a different Colonel Feng in Beijing is not this man.

He tells Chen plainly that his messages to the Americans are being read. The text notes he is not Zhou Feng from Denver.

He agrees to explore shared models at Vancouver, and later comes to Peterson in person to negotiate the Colorado Accord with Foster, offering integration with rank and dignity intact. His grandfather fought Americans in Korea. Early-draft inconsistency: chapter 30 calls him the architect of China's orbital recovery, while chapter 34 says he is not the Beijing Zhou but an operational commander.

Chen comes to suspect he is also an intelligence handler; he walks in just as Chen deletes an unsent warning to Reynolds. In chapter 38 a Colonel Liu Wei on the Moon is described as this man's cousin, and that colonel has no separate entry here.

In an abandoned coffee shop he offers forty thousand gallons of diesel in exchange for their know-how on keeping generators running in the cold, and adds that he would like to hear about Lisa's economic models too.

After the commune votes to accept the aid, he works beside Sarah Williams in a joint clinic and asks her to write up her protocols. She agrees on the condition that they go out under both flags.

He chairs the hybrid council, backs Marcus Thompson's memorial in the old generator room, and later becomes Beijing's chief space negotiator at the Mars Coalition talks.

He teaches Lisa Park everything he knows, fights looters for eight hundred gallons of diesel, and becomes the zone's accidental economist, setting exchange rates in bullets and fuel at a pharmacy-lot trading post. When the fuel runs out he volunteers to stay with his machines so the evacuation convoy can get away. A year later he is teaching Chinese engineers cold-weather maintenance, then running orbital salvage from Salvage Platform Alpha, and finally serving as operations director of the Mars Colony. His wife is Shanice and his daughter is Keisha.

At sixteen she defends the generator room alone during an attack and kills a man to keep the power on. She joins the council, invents the three-way trade that makes Denver General a market, secretly opens talks with the Chinese, and forces the vote that overrules Foster. She stays behind when Denver falls, speaks uninvited at the Vancouver summit, and grows into the economist behind Denver's hybrid market and the Mars Access Framework. Early-draft inconsistency: in chapter 4 her mother is a nurse, and in chapter 6 she is an ER physician. In chapter 41 the text gives Lisa Chen Lisa Park's backstory ("the girl who built Denver's markets"), even though the two are separate people earlier in the book.

She hides her children in the basement from looters, then leads them on foot to Denver General, talking down three drunk men on the way by giving free medical advice. Lisa's father, also at the hospital, is never named. Early-draft inconsistency: chapter 4 calls Lisa's mother a nurse.

He makes the triage calls through the siege and the first blizzard, votes for the Chinese fuel deal, and stays on as chief of staff of the district medical center under Chinese administration. A Patterson mentioned in chapter 33 as a dead veteran instructor may be a different person.

She agrees to join the hospital staff on the condition that she can carry supplies back to her old community each week. She becomes the council's link to outside groups, argues hard for accepting Chinese help, and stays in Denver to keep medical care going after the evacuation. The text is careful to say she is not related to David Chen.

She keeps their children, Emma and Tyler, safe for the six days Jack is gone, and meets him at the door with a flashlight when he comes home.

She is home safe in Colorado Springs when he returns. Early-draft inconsistency: she is eight in chapter 13 and sixteen in chapter 16.

He keeps the family safe through three weeks of collapse and is waiting with a flashlight when Sarah walks in. In the Brookline commune he installs a wood stove where the TV used to be and tells Sarah that the new world may not need to look like the old one.

He holds the shrinking convoy together across the country and lets her go alone for the last few blocks. Later he is the Brookline commune's security chief.

She proposes Operation Celestial Bridge, visits Marcus Thompson's salvage platform, watches the first fully cooperative launch at Kennedy Space Center, and turns Lisa Park's access-over-ownership idea into the Mars Access Framework. By the end she is Earth's senior space adviser. Early-draft inconsistency: she carries David Chen's role and history (the cascade equations, the Beijing lab, the platform solution) after chapter 30, but the text never says she is the same person, so she has her own entry here.

Her crew redirects nineteen objects before a new collision forces an emergency descent. She later commands Harmony Station for three years, hands it to Yuki Tanaka, and moves to the Mars program, where she marries Mason, gives birth to Hope, the first child born on Mars, and becomes the colony's first elected governor. Early-draft inconsistency: she is separate from Lisa Park through chapter 40, but chapter 41 describes her with Lisa Park's history and has Sarah Harrison call Hope her granddaughter, which the rest of the text does not support.

She admits she once wanted to kill every Chinese person she met. She becomes communications lead on Unity Station while raising her son Jake Jr. in orbit, follows the colonies to Mars, and in the final chapter commands the UNS Horizon toward Proxima Centauri with her grown son as her executive officer. Early-draft inconsistency: she fills the late-book role that Sarah Williams might have filled, and her family details shift, with parents in Iowa, a son born in a Denver basement, and a granddaughter she could not have.

His name is on the memorial wall at Harmony Station, and his widow and son carry his memory to Mars and beyond. Early-draft inconsistency: chapter 35 says he was on Dragon, but all four of Dragon's crew survive in this text.

He grows up in orbit and on Mars, speaks three languages, and by the last chapter is Commander Jakob Harrison, executive officer of the first interstellar ship. Early-draft inconsistency: his age does not line up across chapters, and he is described as born in Denver during the cascade winter.

She joins the first crew back on the Moon and later takes command of Harmony Station from Lisa Chen.

Every nation on Earth claims her the day she is born. By the final chapter she is nine and asks her grandmother for a souvenir from Proxima Centauri.

It becomes Foster's secure zone, a fortress, a council chamber in the cafeteria, a market, and finally, after the evacuation, the district medical center under Chinese administration, with a memorial planned in the old generator room.

It runs on backup generators within the first hours.

Reynolds is summoned there, joins the National Recovery Council, and sends his message to Chen.

It is named only once, as one of the Cold War shelters.

Reynolds lands Dragon there with no fuel and five hundred feet of runway to spare. The base commander, Colonel Harris, debriefs the crew, and they split up from there.

It becomes his work base and Chen's server-room office, then the last American stronghold after Denver falls, and finally the site of the Colorado Accord.

It is the pad for Operation Prometheus and later a regular launch site working alongside the Chinese platforms.

Lisa Park walks into its ballroom unregistered and changes the course of the talks.

Its public library becomes the commune's town hall, and the high school gym hosts the vote on Chinese aid.

She leaves with an approval that is never quite spoken aloud.

Sarah Harrison raises her son there while running communications for half the planet, and it doubles as neutral ground for quiet negotiations.

Marcus Thompson runs it as Chief Resource Officer and orders a piece of recovered encryption hardware documented and destroyed rather than sold.

It hosts the first launch with no lead nation.

Mason's six-person crew expands the habitat, finds water ice in a nearby crater, and names the base Tomorrow Base.

Lisa Chen commands it for three years before handing it to Yuki Tanaka. Its memorial wall includes those who died rebuilding as well as those lost in the cascade.

Hope Chen Mason is born there, and Lisa Chen Mason becomes its first elected governor.

It loses a solar array, takes a hull breach from a dead Keyhole satellite, and lands with no fuel left on the runway at White Sands. Afterward a colonel calls it a monument, but a Dragon carries Lisa Chen's debris-clearing crew in chapter 33. In this draft Dragon has heat tiles, control surfaces and landing gear, which is not how the real spacecraft works.

Built to act on their own if command is cut off, they treat almost everything in orbit as a threat and cannot be recalled. Forty-two of an original hundred and twenty survive. Chen learns to steer them by moving the assets they protect, and they turn into the tools that clear debris and escort the first cooperative crews.

Once it starts it cannot be stopped, and within hours it has taken out the satellites that run navigation, communications and the power grid. Much of the book is about how long low orbit stays closed and what it takes to open it again.

Losing GPS timing is what brings the grids down in the story, and Marcus Thompson recognizes it in the hospital's power readings before anyone tells him.

Marcus nurses it along for months, and Lisa keeps it alive during the attack by rerouting the cooling. It finally seizes in the fifth month, and that loss starts the countdown that ends American control of the hospital.

Salvaged ISS modules later become part of Unity Station.

Its solar panels clip Dragon, tearing the hull and knocking the ship off course, which forces Chen's gamble with the Chinese codes.

Its crew did not make it down, a reminder to Chen that the disaster killed Chinese astronauts too.

It gets Mason to orbit, where he maps the Chinese-cleared corridors before re-entering over the Pacific.

Chen puts its odds at three to five percent without knowing where the platforms are. Mason flies it, survives, and brings back proof that China is clearing corridors and building a station. Years later, Prometheus II is the name of the first fully cooperative launch vehicle at Kennedy Space Center, built from Chinese, American, Russian and Indian parts.

After Lisa Park's speech breaks the deadlock, the Accords put orbit under technical committees, with China leading debris clearing under international monitoring and launches shared through licensing.

Peterson keeps its personnel, ranks and its tracking mission under Foster, while Chinese staff join as technical support and a Chinese regional headquarters sits beside him rather than above him. Foster signs it thinking of it as survival, not surrender.

It is built from salvaged cascade debris and commanded by Admiral Sarah Harrison. Her crew votes to rename it Cascade.

It is formally Chinese and run in practice as a hybrid, with Director Wu chairing and Lisa Park running the market. At Vancouver she speaks for it as the Denver Economic Zone.

They run a school, a clinic and a security team, and vote 2,347 to 423 to accept Chinese medical aid, with Sarah Williams as liaison.

Under Lisa Chen and Mason, its first mission grapples dead satellites, pushes them into decaying orbits, and has to flee a fresh collision.

Its first fully cooperative launch, Prometheus II, reaches orbit from Kennedy Space Center with forty-seven satellites from nineteen nations aboard.

Emily Chen breaks the impasse with Lisa Park's idea of access rights instead of ownership, which becomes the Mars Access Framework.