Aerojet Rocketdyne Holdings, Inc. is a holding company of Aerojet Rocketdyne, an American manufacturer of rocket, hypersonic, and electric propulsive systems for space, defense, civil and commercial applications. Aerojet traces its origins to the General Tire and Rubber Company established in 1915, while Rocketdyne was created as a division of North American Aviation in 1955. In addition to Aerojet Rocketdyne, the holding company also owns the real estate firm Easton Development Company, LLC through which it owns over 12,000 acres of land near Sacramento, California originally utilized for Aerojet's operations in testing and manufacturing dating back to the 1950s, however due to the evolution of the firm and propulsion technology, about half of this land is now being redeveloped for residential and commercial use by the company. History Background: Aerojet Several decades after it began manufacturing rubber products, General Tire & Rubber diversified into broadcasting and aeronautics. In the 1940s, the Aerojet company began experimenting with various rocket designs. For a solid-fuel rocket, they needed binders, and turned to General Rubber for assistance. General became a partner in the company. Radio broadcasting began with the purchase of several radio networks starting in 1943. In 1952, its purchase of WOR-TV expanded the broadcast business into television. In 1953, General Tire & Rubber bought the RKO Radio Pictures movie studio. All of its media and entertainment holdings were organized into the RKO General division. Due to the studio and rocket businesses, General Tire & Rubber came to own a great deal of property in California. Its internal facilities management unit began commercializing its operations, landing General Tire & Rubber in the real estate business. This started when Aerojet-General Corporation acquired approximately of land in Eastern Sacramento County. Aerojet converted these former gold fields into one of the premier rocket manufacturing and testing facilities in the Western world. However, most of this land was used to provide safe buffer zones for Aerojet's testing and manufacturing operations. Later, as the need for these facilities and safety zones decreased, the property became available for other uses. Located northeast of Sacramento along US Highway 50, the properties were valuable, being in a key growth corridor in the region. Approximately of the Aerojet lands are now being planned as a community called Easton. Easton Development Company LLC was formed to assist in the process. Background: Rocketdyne In 1955, North American Aviation spun off Rocketdyne, a developer of