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HARLINGEN, TEXAS — The Harlingen Aerotropolis at Valley International Airport has been designated as a Certified Site by McCallum-Sweeney Consultants, a selection and economic development consulting firm. American Electric Power hired McCallum-Sweeny Consulting Services to help develop and manage the process. After the applicant completes certification requirements, McCallum-Sweeney certifies that the property is ready for development, enhancing the marketability of the site. Harlingen Aerotropolis at Valley International Airport (formerly Harlingen Industrial Airpark) includes 479.5 acres.