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Dept of Homeland Security asks transportation companies to be aware of potential threat posed by homegrown violent extremists (HVE)

The Transportation Security Administration (TSA) is providing the attached Security Awareness Message to industry partners to encourage awareness of the potential threat posed by homegrown violent extremists (HVE). Recent reporting in open source media has referred to the use of an improvised device designed to disperse hydrogen sulfide gas in enclosed spaces, possibly including transportation vehicles or venues.  Please see this SAM for additional information on the warning.

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