Helium is used to pressurize tanks and help push fuel into the engines. Without proper helium flow, the rocket cannot safely fly. Because the upper stage is hard to reach at the launchpad, NASA rolled the stacked rocket back into the Vehicle Assembly Building, the sky-scraping hangar where it was originally put together.
为应对客流高峰，铁路部门在京广、京沪、沪昆、京哈等主要高铁干线单日安排开行夜间高铁列车超 1000 列，并在热门方向增开临时旅客列车，单日最高增开 2314 列。
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