NASA astronaut Rex Walheim, STS-135 mission specialist, signs his name on hardware during an ingress/egress timeline training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.
Information
Taken in
Johnson Space Center
Author
NASA
Description
NASA astronaut Rex Walheim, STS-135 mission specialist, signs his name on hardware during an ingress/egress timeline training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.