S2, E2: Maria Bartiromo profiles the rise of one of the most influential CEO’s in business. When Jack Welch became General Electric's then-youngest CEO in 1981, he transformed the century old company into a leaner, more flexible, and profitable corporation, increasing its market value by $387 billion and making it the most valuable company in the world. But in doing so Welch trimmed GE's workforce by more than 100,000, earning him the nickname he despised "Neutron Jack" a reference to the bomb designed to remove the people but leave the buildings intact. From growing up in a working class neighborhood in Salem, Mass., to becoming Fortune’s "Manager of the Century" in 1999, CNBC profiles one of the most admired businessmen in history.