A search and rescue training exercise in South Dunedin this weekend is based on the case of missing woman Denise Potter.
The 54-year-old was reported missing from her home on March 30, 2015 and has never been found.
The family are allowing the case to be used for the training exercise involving more than 60 police staff, LandSAR volunteers and Surf Life Saving members
The teams planned the search on Friday evening.
The main part of the exercise starts on Saturday at 8am.
"I'd like to acknowledge Denise's family, in particular her husband and their children, for consenting to us using this search as a learning tool," says Dunedin police SAR Coordinator Sergeant Nathan White.
"We know that Denise is still at the forefront of their minds and that this operation may stir up some emotions for them."
During the exercise the same areas that were assessed at the time will be looked at.
Police say their presence might cause people to remember something that may be of use.
"Obviously we want to know anything and everything that could help to find closure for Denise's family," Sgt White said.