Helicopters, riot displays, crime scenes, vintage fire engines, police dogs and Daleks will be among the attractions on show at the joint police and fire service open day on Saturday.
More than 60 stands and attractions have been lined up for the free event, which will be held at Wootton Hall, off Mereway in Northampton from 11am until 4pm.
Chief Inspector Dennis Murray, who has lead the organisation of the joint event, said: “We’re expecting a really brilliant day, with things to see and do for people of all ages.
“As always with the open day, there will be the chance for people to see dramatic demonstrations of police tactics and witness flights by the force helicopter.
“But as the fire service is now also part of the day, we’ll also have things like rescue demonstrations from them and a variety of fire vehicles for people to look at.”
The open day has been held at Wootton Hall for a number of years.
The last event saw more than 5,000 people attend.
The event is designed to give the public an insight into the work carried out by the emergency services.
Attractions at this year’s event will include the police helicopter, displays from the police firearms team and demonstrations of the body worn video cameras now used by officers.
Information stands will also be manned by wildlife officers, search and rescue teams, the arson taskforce, the collision investigation team and CID officers.
Children will also be able to meet Daleks at the event, have a go on a bouncy castle, have a look at vintage police and fire vehicles and have their faces painted.
The open day will be managed with help from police Specials and volunteers and people will be able to get information about becoming a Special or volunteer during the day.
It will be opened by the High Sheriff of Northamptonshire, Anne Burnett, at 11am.
Parking spaces for about 600 cars will be available at Wootton Hall.
Entry is free.