Rocketdyne
The Rocketdyne Division was founded by North American Aviation (NAA) in 1955, and was later part of Rockwell International (1967-1996) and Boeing (1996-2005). In 2005, the Rocketdyne Division was sold to United Technologies Corporation, becoming Pratt & Whitney Rocketdyne as part of Pratt & Whitney. In 2013, Pratt & Whitney Rocketdyne was sold to GenCorp, which merged it with Aerojet to form Aerojet Rocketdyne.
Teledyne Technologies
With Robert Mehrabian as Chairman, CEO, and President, Teledyne Technologies (or simply Teledyne, as it is most often called) was initially composed of 19 companies, all dating (in some form) from the original Teledyne, Inc. There were about 5,800 employees, including some 1,400 engineers and scientists. One of these companies, Ryan Aeronautical, was sold to Northrop Grumman before the end of 1999 to raise initial operating capital. Headquarters was initially in the Century City district of Los Angeles, but was later moved to one of the city's suburbs, Thousand Oaks.