The United States Space Force's 5th Space Warning Squadron (5 SWS) is a missile warning unit located at Buckley Space Force Base, Colorado.

It used to be known as the 5th Joint Defense Space Communications Squadron.

[citation needed] From 1992 to 1999, the 5th Space Warning Squadron operated the only ground station in the Southern Hemisphere for the Defense Support Program, a space-based system that provides global missile warning.

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