The Marlboro advertising campaign, created by Leo Burnett Worldwide, is said to be one of the most brilliant advertisement campaigns of all time. It transformed a feminine campaign, with the slogan "Mild as May", into one that was masculine, in a matter of months. The first models were a Navy Lieutenant and Andy Armstrong, the ad agency's art supervisor. Other early models were sales promotion director of Philip Morris, Robert Larking, and others from the Leo Burnett ad agency, Lee Stanley and Owen Smith. A number of models who have portrayed the Marlboro Man have died of smoking-related diseases.