Two former college roommates Laurence K. Marshall and Vannevar Bush, along with scientist Charles G. Smith, founded Raytheon Company in Cambridge, Mass., as the American Appliance Company in 1922. Throughout its more than 80-year history, Raytheon Company has been a leader in developing defense technologies and in converting those technologies for use in commercial markets. From its early days as a maker of radio tubes, its adaptation of World War II radar technology to invent microwave cooking, and its development of the first guided missile, Raytheon has successfully built upon its pioneering tradition to become a global technology leader. It's all here for you. Explore the links to learn about the company's exciting path through the 20th century. Read more about Raytheon's Early Days, the company's expansion into Diverse business markets, and Technology Leadership. Raytheon: Aspiring to be the most admired defense and aerospace systems supplier through world-class people and technology Raytheon is a technology leader specializing in defense, homeland security, and other government markets throughout the world. With a history of innovation spanning more than 80 years, Raytheon provides state-of-the-art electronics, mission systems integration, and other capabilities in the areas of sensing; effects; command, control, communications and intelligence systems, as well as a broad range of mission support services. RAYTHEON AT A GLANCE Chairman and CEO: William H. Swanson Headquarters: 870 Winter Street Waltham, MA 02451-1449 The Waltham main switchboard number is 781.