Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

From left, NASA astronauts Barry “Butch” Wilmore and Suni Williams, Boeing Crew Flight Test (CFT) commander and pilot, speak with VIPs while watching Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

NASA astronaut Barry “Butch” Wilmore, Boeing Crew Flight Test (CFT) commander, watches Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket roll out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

NASA astronaut Barry “Butch” Wilmore, Boeing Crew Flight Test (CFT) commander, watches Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket roll out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket rolls out from the Vertical Integration Facility to the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.