Pittsburgh is a dominant supplier in the aerospace industry. Boeing plans to expand its Fayette County facility and double its workforce, reflecting Pittsburgh's strength. The region is home to manufacturers that produce critical components ranging from paints and coatings to fasteners and landing gear for aircraft. Alcoa, one of the most recognizable Pittsburgh-based aerospace manufacturers, earns over $4 billion annually from its aerospace business unit, with its fasteners and castings used on nearly every commercial aircraft currently in service, including around one million fasteners on a single Airbus A380.