Smokey Bear is an American campaign and advertising icon of the U.S. Forest Service. In the Wildfire Prevention Campaign, which is the longest-running public service announcement campaign in United States history, the Ad Council, the United States Forest Service (USFS), and the National Association of State Foresters (NASF), in partnership with creative agency FCB, employ Smokey Bear to educate the public about the dangers of unplanned human-caused wildfires. A campaign began in 1944 featuring Smokey and the slogan "Smokey Says – Care Will Prevent 9 out of 10 Forest Fires". His slogan changed to "Remember... Only YOU Can Prevent Forest Fires" in 1947 and was associated with Smokey Bear for more than five decades. In April 2001, the message was officially updated to "Only You Can Prevent Wildfires" in response to a massive outbreak of wildfires in natural areas other than forests (such as grasslands), and to clarify that Smokey was promoting the prevention of unplanned outdoor fires, not prescribed burns. Smokey has also had other lines throughout the years, but these have remained his central slogans. According to the Ad Council, 80% of outdoor recreationists correctly identified Smokey Bear's image and 8 in 10 recognized the campaign PSAs. Smokey Bear's name and image are protected by the Smokey Bear Act of 1952 (16 U.S.C. 580 (p-2); previously also 18 U.S.C. 711). Smokey's name has always intentionally been spelled differently from the adjective "smoky". Campaign beginnings Although the U.S. Forest Service fought wildfires long before World War II, the war brought a new importance and urgency to the effort. At the time, many experienced firefighters and other able-bodied men were serving in the armed forces, leaving fewer at home to fight forest fires. The Forest Service began using colorful posters to educate Americans about the dangers of forest fires in the hope that local communities could prevent them from starting in the first place. Careless citizens were not the only fire threat though, as the Empire of Japan considered wildfires a possible weapon. During the spring of 1942, Japanese submarines surfaced near the coast of Santa Barbara, California, and fired shells that exploded on an oil field very close to Los Padres National Forest. U.S. planners hoped that if Americans knew how wildfires would harm the war effort, they would work with the Forest Service to eliminate the threat. The Japanese military renewed their wildfire strategy later in the war,