 Nominal and contingency procedures were investigated and, in some cases, extensively revised prior to flight operations.Tests were subsequently conducted in the facility to qualify the IVA seals, and to support resolution of mission operations issues about bolt reach, contact corridors for alignment, RTL clearance, M/D Cover clearance, and RTL activation.The facility also provided real-time support for the first three flight uses of the CBM to assemble the ISS on orbit.