Raytheon: Aspiring to be the most admired defense and aerospace systems supplier through world-class people and technology Raytheon is a technology and innovation leader specializing in defense, homeland security and othe......Raytheon: Aspiring to be the most admired defense and aerospace systems supplier through world-class people and technology Raytheon is a technology and innovation leader specializing in defense, homeland security and other government markets throughout the world. With a history of innovation spanning 87 years, Raytheon provides state-of-the-art electronics, mission systems integration and other capabilities in the areas of sensing effects and command, control, communications and intelligence systems, as well as a broad range of mission support services.