Trailers are designed to advertise films and draw audiences in without fully revealing the plot. They provide just enough information to pique interest while leaving unanswered questions. Trailers research target audiences to appeal to their interests. They are released 2-3 weeks before a film to build excitement. The marketing campaign for Battleship uses posters with consistent blue color schemes and taglines. Trailers are also released online and on TV to promote the film. Social media is leveraged through word-of-mouth on sites like Facebook to generate free publicity. These coordinated efforts aim to attract target audiences and make them want to learn more about the genre and film.