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During the 1960s, the company began acquiring many unrelated firms and became one of the largest conglomerates in the United States. At its peak, in addition to many defense related companies, it also owned both Royal Typewriters and Adler, Moffat major appliances, Stouffer's frozen foods, and various office equipment and furniture companies.

Like many conglomerates, the company suffered significant declines in the 1970s, selling off many of its unrelated brands and had largely returned to its defense roots by the 1980s. The company continued to shrink after the ending of the cold war and by the late 1990s was a corporate takeover target. The company was purchased by Northrop Grumman in 2001.