Emergency services in Brighton were put to the test today. An explosion was staged at a disused army barracks to see how police, fire and ambulance crews would respond.
Around 200 volunteers took part with other incidents staged across Sussex.
Andy Dickenson reports and speaks to Insp Tony Lumb from Sussex Police and Mark Rist from East Sussex fire and Rescue.
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TV presenter Keith Chegwin has died aged 60 following a "long-term battle with a progressive lung condition", his family said.
Holly has the latest forecast for the west of the region.
Holly has the latest forecast for the east of the region.