Cody entered the United States Air Force in November 1984. He graduated from the air traffic control specialist course at Keesler Air Force Base, Mississippi in May 1985. His background includes various duties in air traffic control at the unit and major-command levels. Throughout his career, he has filled myriad roles including additional-duty first sergeant and Directorate Superintendent. His assignments include bases in New Hampshire, California, Virginia, and Florida. He also served overseas in Germany, South Korea, Turkey, and deployed in support of Operations Southern Watch and Enduring Freedom.