Inside the Vehicle Assembly Building technicians install the piping for a new exhaust system.

Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, technicians install the piping for a new exhaust system in crawler-transporter 1, or CT-1.

Work continues in high bay 3 to upgrade CT-1 as part of its general maintenance. CT-1 could be available to carry commercial launch vehicles to the launch pad. The crawler-transporters were used to carry the mobile launcher platform and space shuttle to Launch Complex 39 for space shuttle launches for 30 years. Photo credit: NASA/Jim Grossmann