Tri-Service
Inside Britain's Top Secret Science Facility
Forces TV has been given rare access to Porton Down, the closed facility where some of the UKs most sophisticated defence technology is developed.
It's a century since the first recorded chemical attack in modern warfare, when gas was dropped on British troops during World War One.
However, as Dan Freedman has been finding out, the technology to guard against such attacks has come along way since then.
More from Forces TV: Explosives Experts Relocate to Porton Down
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