Fireman showing use a fire extinguisher on a training fire hydra

911, practice, apparatus, use, smog, emergency, fighting, danger, extinguish, firefighter, safety, fire, injury, casualty, extinguisher, spray, excited, work, equipment, firefighting, firefighters, background, person, fireman, protective, firemen, heat, dangerous, yellow, protection, training, hot, holding, security, blaze, helmet, gas, station, man, rescue, situation, burn, firefighters training, smoke, health, team, people, help, teamwork, flame