He joined NBC News in 1978 working out of their Chicago bureau. In 1989, Cummins reopened NBC's Southwest bureau in Dallas, becoming its correspondent. Over the years, he reported on various stories including U.S. political coverage, plane crashes, the Iran hostage crisis, the Salvadoran Civil War, the Oklahoma City bombing, many hurricanes, floods, and tornadoes, and live coverage of the Waco Siege. Cummins' work manifested itself when he won an Award for his coverage of the Midwest floods in 1993. He also earned two National Emmy nominations for his coverage of Hurricane Hugo and the Salvadoran Civil War.