Amazon, FedEx and Under Armour are the first major tenants of Tradepoint Atlantic in Baltimore County, the sprawling former site of the largest steel-making operation in the world, where more than 30,000 men and women were employed in 1959. But Bethlehem Steel is long gone, and now Tradepoint Atlantic, a private joint venture, is in the process of redeveloping the waterfront land for a hub of e-commerce and manufacturing. So far, the complex features mostly warehouse and distribution centers with 3,500 jobs. More are coming, and Tradepoint plans to redevelop the old Beth Steel shipyard into a deep-water port for bulk materials. Investors believe they will eventually bring 10,000 jobs and another 7,000 related jobs to the Point. In this episode: Aaron Tomarchio, a senior vice-president of Tradepoint Atlantic, gives a tour of the 3,300-acre complex and catches us up on the massive redevelopment project.