Original sentence: He is noted for his activities in the airline industry, starting in the 1970s, before airline deregulation
Edited sentence: He is noted for a career spanning two decades in the airline industry, starting before airline deregulation.In particular, he is often regarded as anti-union, stemming from his leadership during the 1983 bankruptcy of Continental Airlines that enabled the company to void its union contracts, and during the strike and bankruptcy of Eastern Airlines that eventually led to its permanent shutdown in 1991