The document discusses the growth of the aerospace cluster in the Southeastern United States. Several major aerospace companies have made large investments and expansions in the region, bringing thousands of new jobs. Key factors driving the growth include quality of life, lower costs of doing business compared to other US regions, availability of large industrial sites with infrastructure and access to transportation. States in the Southeast have also offered tax incentives and economic development programs to attract aerospace firms. The growth of the cluster is expected to continue with new opportunities in commercial aircraft production, defense contracting, space programs, and aerospace exports.