One member from the Upper Yarra SES Unit helped search the Hallam Valley Wetlands alongside other SES units and emergency services to find a missing person.
Crews conducted line searches through mud, swamp, grasses, tea tree and dense reeds that often towered above their heads during the search.
SES Narre Warren was first asked to assist Victoria Police in the search from Tuesday 11 to Thursday 13 April, and reached out to other units with over 60 members from 17 units turning out to lend another pair of eyes.
The search was for missing 27-year-old Wantirna woman Sarah who was last seen in Narre Warren on 23 March in the afternoon.
It is understood she was also seen in Sladen Street, Cranbourne on Wednesday 22 March.
Sarah is described as being of Caucasian appearance with blonde hair, last seen wearing a green jumper, cream track pants, white sneakers and yellow singlet.
Police and family are concerned due to her medical conditions and her disappearance being out of character.
Crews were also supported by the Victoria Police Drone Unit, Mounted Branch and Search and Rescue squad as well as Search and Rescue Dogs Australia.