Anna Holligan tries on a gas mask
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Gas masks for crew of 'chemical weapons' frigate

An international effort is under way to remove and destroy Syria's most dangerous chemical weapons.

The weapons will be transported from facilities in Syria and then carried out on Norwegian and Danish vessels to be disposed of on a specially adapted US ship.

Every person on the frigate has a personalised gas mask, adjusted and tested to ensure no toxic substances can penetrate.

Anna Holligan reports from the Norwegian vessel HNoMS Helge Ingstad.

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