sentences:  He was recognized worldwide for his leadership in the automotive and aviation industries, as a pioneer in the human relations field (who kept management–labor strife to a minimum at Thompson and TRW by providing effective channels for worker grievances and collective bargaining), and a leader in the philanthropic community in Cleveland, Ohio.As head of Thompson Products for more than 25 years, Crawford oversaw the company's transformation from an automotive and aircraft parts manufacturer to a leader in the aviation and aerospace industries.For many years, Crawford collected antique automobiles.