In an effort to educate Americans about how to prevent accidental wildfires, Disney is joining the Ad Council, the U.S. Forest Service and the National Association of State Foresters (NASF) to launch a new series of public service advertisements (PSAs) featuring scenes and characters from Disneytoon Studios’ upcoming animated film “Planes: Fire & Rescue.” The PSAs are an extension of the Wildfire Prevention PSA campaign, featuring the iconic Smokey Bear, who celebrates his 70th birthday this summer. According to the U.S. Forest…