More than 2,000 people are taking part in a three day long major disaster exercise in Hampshire, which begins today.
It's been organised by Hampshire Fire and Rescue Service and the Universities of Portsmouth and Liverpool - and it also involves 40 other organisations.
Those taking part are going to be involved in practice scenarios including mudslides, flooding, storm surges and collapsing buildings.
This exercise will take place at eight different locations across the county including Eastleigh Fire Station, Fort Widley, Fort Purbrook, St Andrew’s Court, Wymering, Andrew Simpson Sailing and forts near north Portsea.
The fictitious island of Mas will be visited by the Secretary of State for International Development Penny Mordaunt who is also Portsmouth North MP and Women and Equalities Minister.
Hampshire Fire and Rescue Service Urban Search and Rescue Volunteer and organiser Phil Crook said:
“Hampshire Fire and Rescue Service is among the best services in the country and our crews are regularly called upon to help in the aftermath of international disasters.
“Exercises like this are vital in developing and maintaining skills and getting valuable experience working alongside partners.
“These scenarios create a sense of realism you just can’t get on the drill yard or classroom and enable us to save more lives when disasters strike.”