|4th Space Warning Squadron|
|Branch||United States Air Force|
|Decorations||Air Force Outstanding Unit Award|
|4th Space Warning Squadron emblem (approved 2 March 1995)[note 1]|
The 4th Space Warning Squadron is an active United States Air Force Reserve Command unit, formerly located at Holloman Air Force Base, New Mexico, and now located at Buckley Space Force Base. The unit was activated on August 3, 2019. It was previously activated in May 1992 as the 4th Space Communications Squadron, when it took over the mission and personnel of the 4th Satellite Communications Squadron, before being inactivated in March 1996. The squadron's primary mission is to provide mobile Defense Support Program support in case of hostilities.
The squadron provided worldwide missile warning, space launch and detection in the event of an attack against the United States.
The 4th Space Warning Squadron was activated on 15 May 1992, when it took over the mobile Defense Support Program (DSP) satellite mission which had been performed since 1983 at Holloman Air Force Base, New Mexico by the 1025th Satellite Communications Squadron, Mobile[note 2] and the 4th Satellite Communications Squadron, Mobile.[note 3]
The squadron employed the Air Force's only strategic survivable, mobile ground system to receive early warning missile attack data. The 4th provided survivable and endurable missile warning detection to the National Command Authority and had the ability to survive and operate through all phases of trans/post attack. Unlike fixed units, the 4th was designed to be mobile, and could deploy to any location in the world. In addition, the DSP satellites provided immediate, worldwide missile warning, space launch, and nuclear detonation detection.
|Air Force Outstanding Unit Award||1 October 1992-30 September 1994||4th Space Communications Squadron (later 4th Space Warning Squadron)|
|Air Force Outstanding Unit Award||1 October 1995-1 March 1996||4th Space Warning Squadron|