The Navy closed Moffett Naval Air Station in 1994, and, at first, some buildings sat empty. But now, given the right economic conditions, Moffett is poised to be a national model of base reuse with various parts serving as a business incubator, business park and research university. Collectively, those projects could add as many as 4,000 residences, more than 2,000 students and upwards of 5,000 employees to the former base.