The 2007 Boston bomb scare occurred on January 31, 2007 when police officers mistakenly identified small electronic devices found throughout Boston, Massachusetts and the surrounding cities of Cambridge and Somerville as improvised explosive devices. The devices turned out to be battery-powered LED placards with an image of a cartoon character called a Mooninite. The placards were part of a guerrilla marketing campaign for Aqua Teen Hunger Force Colon Movie Film for Theaters, a film based on the animated television series, Aqua Teen Hunger Force on Cartoon Network's late-night programming block, Adult Swim.