Brian Fennessy, new head of the U.S. Wildland Fire Service, says his agency is 'trying to bring on additional aircraft and bring them on early,' and dismisses criticism of prevention methods.

(Image credit: Joe Raedle)

Boundary Waters Canoe Area Wilderness in Minnesota is filled with more than a thousand lakes and rivers. But a recent vote in congress to allow mining nearby could threaten the preserve's waterways.