Starliner boarded a transporter at the Commercial Crew and Cargo Processing Facility at Kennedy Space Center on Monday. Final checks were completed Tuesday for the short trip to the United Launch Alliance's Vertical Integration Facility at the Space Force station.

"The Atlas V will receive its precious cargo today as the Boeing Space Starliner spacecraft is transported to ULA's Vertical Integration Facility and lifted onto the rocket," ULA said on X.

Astronauts Butch Wilmore and Sunita Williams, the first passengers, posed in front of it.

"Big day for NASA," Wilmore said, according to Florida Today. "Big day for Boeing as we get over to the rocket and mate these things together."

Williams added: "[Boeing] made it happen and it's time to turn over from production to operation. We're ready to take it. We're ready."

In April, NASA and Boeing called off the crew test launch of Starliner that was originally set for May 1 until a review of the International Space Station operations was completed. Starlink will take Wilmore and Williams to the space station and dock with the Harmony module.

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