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Federal Signal Thunderbolt - Caddo Lake National Wildlife Refuge (Ex-Longhorn Army Ammunition Plant property) near the Visitor's Center. Siren is inactive. Photos taken in 11/2020.
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Federal Signal Thunderbolt - Caddo Lake National Wildlife Refuge (Ex-Longhorn Army Ammunition Plant property) near the Visitor's Center. Siren is inactive. Photos taken in 11/2020.