Major incidents simulated in Sussex training exercise
Major incidents are being simulated by emergency services around Sussex as part of a training drill.
Live exercises are being staged in public places in Brighton, Eastbourne and mid-Sussex to make them as realistic as possible.
Fire, police and ambulance services are taking part in the exercises.
Steve Voice, of Sussex Police, said people would notice increased emergency service activity in these areas.
'Not be specific'
Mr Voice said: "The scenarios we are testing are exceptional and are of a magnitude that allows us to test all the likely resources available."
A Sussex Police spokesman added: "Exercise planners do not want to be specific about what the exercise involves or where the locations are to make the spontaneous response to these emergency situations realistic."
Officers will also be tested on identifying victims and will be working with the coroner on Thursday.
Local authorities, health services and the Highways Agency are also involved in the training exercises.