It was fitting when Boeing bought Rocketdyne in 1996. Both company names had been part of the Valley’s history. A Boeing plant had been located at the original Burbank Airport, called United Airport in 1930. Rocketdyne has been in the Valley in some form since the late 1940s, when the Santa Susana Field Laboratory opened to begin test-firing rocket engines. The name will continue, but Rocketdyne will now be part of Hartford-based United Technologies and its Pratt & Whitney Space Propulsion unit. The Daily News edition of Feb. 23, 2005 has the story.