SpaceX is preparing to launch its first people into orbit on Wednesday using a new Crew Dragon spaceship. NASA astronauts Bob Behnken and Doug Hurley will pilot the commercial mission, called Demo-2.

Elon Musk, founder, CEO, and chief engineer/designer of SpaceX speaks during a news conference.John Raoux/AP Photo

• SpaceX is preparing to launch its first people into orbit on Wednesday using a new Crew Dragon spaceship.
• NASA astronauts Bob Behnken and Doug Hurley will pilot the commercial mission, called Demo-2.
• But the rocket company, founded by Elon Musk in 2002, first needed to test-fire its rocket and get permission from NASA and even other countries before attempting the launch.
• On Friday, SpaceX checked off both boxes, leaving one final pre-launch review on Monday before the mission can leave Earth.

SpaceX, the rocket company founded by Elon Musk in 2002, is steamrolling toward its first-ever rocket launch of people into orbit.

The NASA-funded commercial mission is called Demo-2 and will fly two passengers: seasoned NASA astronauts Bob Behnken and Doug Hurley.

SpaceX's Crew Dragon spacecraft in a hangar at Kennedy Space Center's Launch Complex 39A on May 20, 2020. The vehicle is scheduled to launch NASA astronauts Bob Behnken and Doug Hurley on May 27.SpaceX via Twitter

If all goes according to plan, the team will lift off inside the company's new Crew Dragon spaceship at 4:33 p.m. ET on Wednesday, in effect resurrecting human spaceflight from America after nearly a decade of dormancy. If the weather or other conditions don't cooperate, SpaceX's next chance to launch Demo-2 will be Saturday, May 30, at a similar time.

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"We are now preparing for a launch in five short days," NASA administrator Jim Bridenstine said during a televised press briefing on Friday, later adding: "We are a go."

Musk: It's taken 'probably 10,000 meetings' and tests to get here

NASA's Commercial Crew Program manager, Kathy Lueders, speaks during a flight readiness review upcoming for SpaceX's upcoming Demo-2 rocket launch of NASA astronauts.Kim Shiflett/NASA

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The first milestone SpaceX achieved was a flight readiness review. Such pre-launch meetings are typically long, as stakeholders comb for any final issues and think of ways to reduce risk. When people are on the line, though, such reviews become even more painstakingly detailed.

"Everybody in the room was very clear that now is the time to speak up if there are any challenges. And there were," Bridenstine said.

An illustration of SpaceX's Crew Dragon vehicle, a spaceship designed to fly NASA astronauts, docking with the International Space Station.SpaceX

One apparently had to do with final discussions of an issue raised by members of Roscosmos. (The Russian space agency not only co-runs the space station with NASA, but also is — for now — the only way astronauts can reach the space station.)

Kirk Shireman, who manages the space station program at NASA's Johnson Space Center, said Roscosmos in 2019 made SpaceX aware of a "very, very remote possibility of a failure" with the Crew Dragon that might cause "catastrophic damage" when docking to the ISS.

"SpaceX said we understand, and we'll make a modification," Shireman added, noting the unspecified issue was resolved to Russia's satisfaction with the new Crew Dragon ship for Demo-2.

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The meeting lasted nearly two workdays, but SpaceX came out the other end with permission.

SpaceX successfully test-fires the engines of a Falcon 9 rocket at Kennedy Space Center in Florida on May 22, 2020, ahead of the company's first-ever crewed mission, called Demo-2.SpaceX

The second major hurdle that SpaceX cleared, shortly after the review, was a brief test-firing of the Falcon 9 rocket's engines.

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Luckily for Musk, that should be the final meeting on the path to launch.

"There might have been 10,000 meetings" to get to this point, Musk said on May 17 for a Bloomberg story by Ashlee Vance. "There are probably 10,000 tests of one kind or another that have taken place."

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NASA: 'We're going to stay hungry until Bob and Doug come home'

NASA astronauts Bob Behnken (left) and Doug Hurley (right) inside SpaceX's Crew Dragon spaceship.NASA

Business Insider requested the exact loss-of-crew probability for Demo-2, but NASA did not immediately provide the figure. The agency also did not immediately provide a loss-of-mission estimate, which examines the likelihood astronauts survive yet can't complete their mission.

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Whatever the risk of Demo-2 may be, Behnken and Hurley — who SpaceX's president and COO, Gwynne Shotwell, has described as "badass" dads, test pilots, and astronauts — said they're ready to fly.

"I think we're really comfortable with it," Behnken told Business Insider just after the flight review finished on Friday. He added that, by working with SpaceX on Crew Dragon for roughly five years, he and Hurley have more insight into the ways the mission could fail "than any crew has in recent history, just in terms of understanding the different scenarios that are at play."

Lueders said no amount of reviews and tests would stop the team from continuing to imagine other possible problems and improve solutions for known issues.

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"We're going to stay hungry until Bob and Doug come home," Lueders said. "Our teams are scouring and thinking of every single risk that's out there, and we've worked our butt off to buy down the ones we know of, and we'll continue to look — and continue to buy them down — until we bring them home."