The team that tested the umbilical lines and accessories that will connect from the mobile launcher to NASA's Space Launch System rocket and Orion spacecraft for Exploration Mission-1 hold a banner signing event July 24, 2018, to mark completion of testing at the Launch Equipment Test Facility (LETF) at NASA's Kennedy Space Center in Florida. A total of 21 umbilicals and launch accessories were tested on various simulators at the LETF before they were transferred to the mobile launcher for installation.