page_title: Horizontal Integration Facility
section_title: HIF in the United States
hierarchical_section_title: Horizontal Integration Facility / HIF in the United States
caption_attribution_description: English: SpaceX built a horizontal processing facility at the base of Launch Complex 39A where it will process rockets and spacecraft before they are transported to the pad for launch.
context_page_description: A horizontal integration facility is a location within which the stages of a multistage rocket are brought together, before the assembled stack is rolled out to the launch pad or complex and raised into vertical position for launch.
caption: The HIF at LC-39A. The rocket is transported to the launch pad through the door seen in the image.
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