As Canadian firefighters boarded flights Wednesday to battle blazes in Australia, they said there are some differences in the tactics they'll employ compared to local fires. In Halifax, the first three of 69 forest firefighters heading to the island continent say hotter temperatures and drier conditions call for different measures than typical East Coast fires. The Canadian Interagency Forest Fire Centre says 27 incident management staff are leaving for Melbourne Thursday, followed by two more incident managers and 40 firefighters on the weekend.