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Engineers and technicians on the Test and Operations Support Contract go over procedures with liquid hydrogen (LH2) provider PRAXAIR to prepare for a fit check of the new LH2 transfer flex hose at Launch Pad 39B at NASA’s Kennedy Space Center in Florida. LH2 provider PRAXAIR will connect the transfer flex hose from its LH2 truck to the LH2 tanker to confirm that the hose fits and functions properly. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to Pad 39B to support processing of the Space Launch System rocket and Orion spacecraft for Exploration Mission 1 and NASA’s journey to Mars