fire marshal

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The head of a department or office that is charged with the prevention and investigation of fires.
• noun A person in charge of firefighting personnel and equipment at an industrial plant.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun US A public official with police powers responsible for enforcing fire safety regulations, and sometimes, who also investigates suspicious fires.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the head of a fire department