High up on the mobile launcher (ML) tower at NASA's Kennedy Space Center in Florida, construction workers assist as a crane moves the Core Stage Inter-tank Umbilical (CSITU) into place for a fit check of the attachment hardware. The CSITU will be located at about the 140-foot level of the ML tower. The umbilical will be lowered down and installed permanently on the ML at a later date. The CSITU is a swing-arm umbilical that will connect to the Space Launch System core stage inter-tank. It will provide conditioned air, pressurized gases and power and data connection to the core stage. The Ground Systems Development and Operations Program is overseeing installation of the umbilicals.