Chief fire officer for Northern Ireland Chris Kerr has retired following 30 years of service.
Dale Ashford replaces him on an interim basis.
Mr Kerr has served in all Belfast fire stations and was district commander of South and East Tyrone.
He was awarded the Queen’s Fire Service Medal in the 2010 New Year’s Honours list.
Northern Ireland Fire & Rescue Service chief executive Jim Wallace said: “Mr Chris Kerr leaves the organisation following 30 years of impeccable service, where he has dealt with extremely testing circumstances.
“I thank him for what has been a magnificent career.”
Mr Ashford has 28 years’ service, joining the then Northern Ireland Fire Brigade as a firefighter in 1987.
He said: “It is a privilege to accept this position as interim chief fire officer of Northern Ireland Fire & Rescue Service, an organisation that saves lives and protects our community and an organisation that I am personally extremely proud of.”