Water and foam
"My son liked to play with a fire-fighter's helmet" and "It was the fire-fighters' opinion that the fire could be put out" (several of them) and "it was the fire-fighter's opinion that the fire could be put out" (just one with an opinion).
No. there were no aircraft at that time.
firefighters use carbon dioxide to put out fires.
Fire fighters use mostly arithmetic, but some algebra too.
The high winds hindered the fire fighters in their efforts to put out the blaze.
CO2
Here is an example: Fire fighters face many hazards. Explosions, fire, toxic inhalations, etc. The cumulative risk of being a fire fighters is immense.
Fighter aircraft can stop on a short runway. On aircraft carriers, cables are used to stop them. Some fighters landing on short land runways use braking parachutes.
Sodium chloride dry powder
Yes, Helicopters have radios similar to what police and fire fighters use.
Unplug the tv and use a fire blanket or fire extinguisher.
No, using flour to put out a fire is not recommended as it can actually make the fire worse by creating a dust explosion. It is safer to use a fire extinguisher or water to extinguish a fire.