Spirit AeroSystems Holdings, Inc., a global leader in the design, engineering, manufacture and marketing of commercial aerostructures, operates through three primary segments: Commercial, Defense & Space, and Aftermarket. The Commercial segment offers a comprehensive range of products, including fuselage sections and systems, nacelles, horizontal and vertical stabilizers, flaps and slats flight control surfaces, wing structures, and fully functional and tested wing systems, primarily serving the commercial and business/regional jet programs. Meanwhile, the Defense & Space segment primarily serves U.S. Government defense programs and engages in the fabrication, bonding, assembly, testing, tooling, processing, engineering analysis, and training on fuselage, strut, nacelle, and wing aerostructures, among other services. Additionally, this segment provides hypersonics and missile solutions, forward cockpit and cabin, fuselage work on rotorcraft aerostructures, and classified programs. Finally, the Aftermarket segment provides maintenance, repair, and overhaul services, trading and leasing of rotable assets, engineering services, spare parts for fuselage, strut, nacelle, and wing structures, and repair services for radome, flight control surfaces, and nacelles. Spirit AeroSystems Holdings, Inc. was founded in 1927 and is headquartered in Wichita, Kansas.