The large aircraft on the left is the Electra L-188. It has four turbine engines, can cruise at 592 km/hr (368 mph), and can carry 11,365 liters (3,000 gallons) of fire retardant.
To the right of the Electra are four of the Air Tractor 802F amphibious aircraft. They can work as land-based or skimmer air tankers. They have a cruising speed of 260 km/hr (161 mph) and can carry up to 2,430 liters (644 gallons).
The Chuckegg Creek Fire in northern Alberta has burned 276,000 hectares (682,000 acres).
The Fire Boss can carry 800 gallons
The FB can not legally carry 800 US gallons .. with full fuel it is a 400 US gallon tanker at the best, working its way up to 680 US gallons as it burns off fuel.
It has the capacity – but the legal gross weight limits the amount it can carry – legally!