Wildfire

Wildfire is a forest fire fighting strategy game that relies on the
player to figure out the best plan of action when money and resources
are limited and there's a fire to be stopped. There are two types of
gameplay which includes a campaign base mode and a random fire mode
which adds hours of forest fire fighting. Buildable units include:
hotshots, smokejumpers, ditch-digging bulldozers, water-dropping
chinooks, transport helicopters and many more.

http://www.gamespot.com/pc/strategy/wildfire/index.html