Duffy is a retired Naval Officer. He has a BS degree in Biology Education and a Masters Degree in Computer Science. During his career in the Navy, he attended eight wilderness survival courses. While stationed at Fort Meade, Maryland, Kevin served as a volunteer naturalist at the Patuxent Wildlife Refuge where he conducted monthly wild edible plant walks. Upon his retirement from the Navy he returned to his native Indiana where he continued to conduct local wild edible plant walks as well. Currently, Kevin works during the week as a computer consultant.