Kutak Rock LLP is a US law firm, founded in 1965 in Omaha, Nebraska, which now[when?] has more than 500 attorneys in 17 offices around the US serving local, regional and national clients. The firm was founded in Omaha in 1965 by Robert J. Kutak and Harold Rock. After 1972 the firm pursued an aggressive expansion strategy, first by absorbing two other Omaha firms and then by adding offices in other cities, beginning in 1977 with offices in Denver and Washington, D.C., By 1978 the firm, with its main concentration in public finance law, was reported to be the fastest growing law firm in the United States. By 1981 it was apparent that the firm had expanded faster than it could sustain, and several offices closed, but growth later resumed as the firm added other specialties. In 2014 the firm added its 17th office, in Spokane, Washington. Robert Kutak, a founder of the firm, chaired the American Bar Association commission which developed the new Model Rules of Professional Conduct and rewrote ethical standards for lawyers; today, the ABA offers a legal education award named for him. He was also instrumental in purchasing and preserving the Omaha Bank Building for use as the firms main office. He died of a heart attack in 1983, at age 50.