Will Sattler of the Closeout Crew is seen on the crew access arm just outside of the white room awaiting the arrival of Artemis II crewmembers NASA astronauts Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; at the 275-foot level of the mobile launcher as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch teams are simulating the launch day timeline including suit-up, walkout, and spacecraft ingress and egress. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all. Photo Credit: (NASA/Joel Kowsky)

Taylor Hose, left, Christian Warriner, center, and Will Sattler of the Closeout Crew are seen as they prepare for the arrival of Artemis II crewmembers NASA astronauts Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; at the 275-foot level of the mobile launcher to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch teams are simulating the launch day timeline including suit-up, walkout, and spacecraft ingress and egress. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all. Photo Credit: (NASA/Joel Kowsky)

Closeout Crew lead Taylor Hose, second from left, talks with NASA astronaut Andre Douglas, second from right as he and closeout crewmembers Will Sattler, left, and Christian Warriner prepare for the arrival of Artemis II crewmembers NASA astronauts Reid Wiseman, commander; Victor Glover, pilot; Christina Koch, mission specialist; and CSA (Canadian Space Agency) astronaut Jeremy Hansen, mission specialist; at the 275-foot level of the mobile launcher as they prepare to board their Orion spacecraft atop NASA’s Space Launch System rocket during the Artemis II countdown demonstration test, Saturday, Dec. 20, 2025, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch teams are simulating the launch day timeline including suit-up, walkout, and spacecraft ingress and egress. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all. Photo Credit: (NASA/Joel Kowsky)

Members of the Artemis II closeout crew, from left, William Sattler; Tyler Sutherland; Michael Heinemann; Christian Warriner; Taylor Hose; Jenni Gibbons, Artemis II backup crew member; Bill Owens; and Andre Douglas, Artemis II backup crew member, pose for a photo with NASA’s Vehicle Assembly Building behind them at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 19, 2025. The closeout crew is responsible for safely securing the astronauts inside the Orion spacecraft on launch day and closing the hatch during launch countdown.

Members of the Artemis II closeout crew, from left, William Sattler; Tyler Sutherland; Michael Heinemann; Jenni Gibbons, Artemis II backup crew member; Bill Owens; Taylor Hose; Andre Douglas, Artemis II backup crew member; and Christian Warriner pose for a photo near the countdown clock featuring the Artemis Moon logo at the NASA News Center at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 19, 2025. The closeout crew is responsible for safely securing the astronauts inside the Orion spacecraft on launch day and closing the hatch during launch countdown.

Members of the Artemis II closeout crew, from left, William Sattler; Tyler Sutherland; Michael Heinemann; Christian Warriner; Taylor Hose; Jenni Gibbons, Artemis II backup crew member; Bill Owens; and Andre Douglas, Artemis II backup crew member, pose for a photo with NASA’s Vehicle Assembly Building behind them at the agency’s Kennedy Space Center in Florida on Thursday, Dec. 19, 2025. The closeout crew is responsible for safely securing the astronauts inside the Orion spacecraft on launch day and closing the hatch during launch countdown.