CIRCOR Aerospace & Defense is focused on the design, development, and manufacture of specialty fluidic control, actuation, an ... d aircraft landing gear systems for demanding aerospace and defense applications. . CIRCOR Aerospace & Defense has business units located in California, New York; Paris and Pau, France; Uxbridge and Cambridge, UK; and Tangier, Morocco. Parent company CIRCOR International is headquartered in Burlington, Massachusetts and the CIRCOR Aerospace & Defense group is headquartered in Corona, California. read more