CBRN event in United States of America on Sun 26th October 2025

26th October 2025

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The U.S. Department of Homeland Security responded Sunday to an incident that appeared to involve federal agents deploying tear gas on Chicago's Northwest Side. On Saturday, federal agents deployed what appeared to be tear gas in Chicago's Old Irving Park neighborhood.

Contextual analysis

Analysing the event count by highlighting the presence of munition categories over a six-month data period.

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Information sources

Discussion and media of this event has been extracted from all sources.

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Verified munitions and items

Below is an item identification verified by our in house experts. Identifications are made from image and video evidence attached to the event.

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Country information

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United States of America (USA)

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Events using similar munitions or platforms and those that happen within a recent time line and proximity are displayed below.

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