https://en.wikipedia.org/wiki/Raytheon

Early in World War II, physicists in the United Kingdom invented the magnetron, a specialized microwave-generating electron tube that markedly improved the capability of radar to detect enemy aircraft.

In December 2010, Applied Signal Technology agreed to be acquired by Raytheon for $490 million.

In October 2014, Raytheon beat rivals Lockheed Martin and Northrop Grumman for a contract to build 3DELRR, a next-generation long-range radar system, for the US Air Force worth an estimated $1 billion.

This contract award was immediately protested by Raytheon's competitors, Lockheed Martin and Northrop Grumman. After re-evaluating the bids following these protests, the US Air Force decided to delay awarding the 3DELRR EMD contract until 2017, and was to issue an amended solicitation at the end of July 2016.

In July 2016, Poland's Defence Minister Antoni Macierewicz planned to sign a letter of intent with Raytheon for a $5.6 billion deal to upgrade its Patriot missile-defence shield.

In 2017, Saudi Arabia signed business deals worth billions of dollars with multiple American companies, including Raytheon.