Raytheon's Andover campus first opened in 1980. Expansion construction is scheduled to conclude in late 2026. About Raytheon Raytheon, an RTX business, is a leading provider of defense solutions to help the U.S. government, our allies and partners defend their national sovereignty and ensure their security. For more than 100 years, Raytheon has developed new technologies and enhanced existing capabilities in integrated air and missile defense, smart weapons, missiles, advanced sensors and radars, intercepto ...