Warm Zone 08 : The control area immediately outside the boundary of the established hot zone having a boundary that extends far enough from the hot zone to protect personnel outside the warm zone from the adverse effects of the fire
NFPA 1081 Standard for Industrial Fire Brigade Member Professional Qualifications, 2007 ed. https://www.alabamafirecollege.org/docs/skills/ifb -skills.pdf?Status=Master&sfvrsn=2, (Std: Ind Fr Brgd Member Prof Qualf - Amer) {375 NFC}