Coulson Aviation — based in Port Alberni, B.C. — operates three Boeing CH-47 Chinook helitankers with tanks that hold more than 11,000 litres, as well as an “over-watch helicopter that runs intelligence,” including thermal imaging when deployed at night. The “aerial firefight” has been essential as blistering winds have prevented groundcrews from accessing the flames, said Wayne Coulson, CEO of Coulson Aviation. Coulson said the company has dropped more than a million gallons — or 4.5 million litres — of water over the fires in the last week, 70 per cent of which was released at night… Quebec’s contribution is expanding with two more water bombers heading to California on Wednesday. Quebec’s two extra CL-415 aircraft bring the province’s total California aid package to four water bombers, 12 pilots and six technicians.