Raytheon, now rebranded as RTX, is a major American industrial corporation with a rich history in defense and aerospace electronics. Founded in 1922 by Laurence Marshall, Vannevar Bush, and Charles Smith, the company initially focused on developing vacuum tubes and later became renowned for its contributions to radar technology during World War II. Raytheon's innovations extended to consumer products, including the first countertop microwave oven, and it has also been a significant player in missile development and semiconductor manufacturing. The company merged with United Technologies Corporation in 2020 to form Raytheon Technologies, which continues to shape the future of air travel, global defense, and space exploration through transformative technologies like artificial intelligence, cybersecurity, and advanced materials.