"Volunteer rescuers" refers to people who offer their help and support in rescuing or saving others without being paid for their services. Full definition
While there are typically plenty of volunteer rescuers around to free the animals in these instances, this behavior puts both the sharks and the fishermen at risk, and threatens to sour the relationship between the two. (discovermagazine.com)
«Last Men,» the most harrowing of the Syria documentaries, meanwhile, shows its filmmakers sharing the same mortal risks as the brave, overwhelmed volunteer rescuers they're recording (some of the latter have not survived). (dailynews.com)
We are a «network» of volunteer rescuers in the Midwest. (halepetdoor.com)