Technicians and engineers with Jacobs on the Test and Operations Support Contract, prepare for a swing test of the Core Stage Inter-tank Umbilical (CSITU) on the mobile launcher in High Bay 3 of the Vehicle Assembly Building on Feb. 22, 2019, at NASA's Kennedy Space Center in Florida. 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. Exploration Ground Systems at Kennedy is conducting the swing test.