money and assets to Alfred, Earle was unable to liquidate his majority shareholding which would have allowed for a complete takeover. When Bruce finally returns to Gotham, he does not show obvious interest in reclaiming the family business. He is given a generous trust fund to live off. Instead, he chooses to work in Applied Sciences, using it and his coworker Lucius Fox to provide him with high-tech equipment. He takes gear originally made for military use, including body armor and a prototype armored vehicle, and uses them to create equipment for his war on crime. At the film's end when Wayne Enterprises becomes a public corporation, Bruce reveals he has become majority shareholder by purchasing the shares through various shell companies he established using his trust fund. He then fires Earle and installs Fox as the active CEO. According to Forbes' 25 Largest Fictional Companies, Wayne Enterprises had estimated sales of $31.3 billion in 2007. Wayne Tower is portrayed by the Chicago Board of Trade Building. Wayne Enterprises appears in Batman: Gotham Knight (which takes place between Batman Begins and The Dark Knight) specifically in "Crossfire" with Fox showcasing his new gyroscopic electromagnetic sensor that can deflect small arms fire to Bruce. In The Dark Knight, Fox remains as the CEO of Wayne Enterprises. The company's research and development department has produced specialized fabrics and materials, electromagnetic gyroscopic navigational satellite systems (as shown on Batman: Gotham Knight), antihemorrhagic agent, radiation stamping technology, and rotor blades made of metal composites that have low radar signature and special acoustic design. As in Batman Begins, Bruce continues to utilize the resources of his company to aid his vigilante work as Batman. For example, he has Fox arrange a business meeting with a Chinese mogul Lau (Chin Han) in order to "get a closer look" at Lau's business practices and confirm his own suspicions that Lau and his company, LSI Holdings, had been cooperating with the Gotham underworld in money laundering schemes. He also had Fox build components for his new Batsuit. Batman also has used the company's radiation stamping technology to lightly irradiate a large quantity of money for Gordon and his detectives to use to track the mobs' money and identify the banks that are aiding them. Later on, Batman uses a sonar technology developed by Fox in order to track down and capture the Joker. In addition, a subplot of