3 adjectives to describe saver

One minute later an excited life-saver was shut in the box of the public telephone, gritting his teeth at the inanity of the central operator who insisted on giving him "A-1224" instead of "A-1234," the Hotel Wellington.

MRS PATRICK watches them from sight.) MRS PATRICK: (bitter, exultant) Savers of life!

And the pleasant prospect of being shut in at the beach with the cast-iron Abraham and these husky life-savers for the remainder of the winter!

3 adjectives to describe  saver