close-up of a firefighter`s hand in protective leggings, unscrewing the valve of the air apparatus of one of the cylinders

911 action air apparatus background blaze building burn catastrophe civilian close conflagration cylinders danger dangerous department emergency equipment extinguish fighter fire firefighter firefighters fireman flame hand helmet hero hose house indoors insurance leggings male man occupation one person property protection protective pyromania running safety service smoke stairs training uniform unscrewing valve victim water white work