Sean Killion

International competition Not long after High School graduation, he was a surprise medalist in the July, 1986 Goodwill Games, defeating world record and Olympic gold medalist Vladimir Salnikov, out touching him at the wall, winning two gold medals and a bronze.

1992 Olympics At the 1992 Olympic Trials, in a career high point, Killion won the 1,500 freestyle with a personal best time of 15:07.61. After the trials, he trained for Olympic Competition at Team Foxcatcher in Philadelphia's Newton Square, where he averaged over sixty hours in weekly training.

Later work life and coaching After retiring from high level competitive swimming around 1992, Killion worked as an Assistant swim coach at Rutgers University, near his home town, but after a year decided he had a greater passion for sales. At Rutgers, he worked under Hall of Fame Head Coach Frank Elm. Around 1997, he settled in the Bay Area of California, where he pursued surfing as a hobby, often riding the waves found off Half Moon Bay, twenty-five miles South of San Francisco. In September 2005, he married his wife Regan B. Stuart, a former sprint track athlete at Southern Methodist University who worked as a pediatric physician at Stanford University.

While in the Bay Area, he began work as a sales manager for Federal Express at least through 2005. From around 2012-2023, Killion worked with the Enterprise Sales Team at Indeed Inc. in the San Francisco area, finding professionals jobs, often meeting with large corporations to help in their need to recruit staff. In 2024, the San Francisco area's Olympic Club announced Killion to be their new Junior Swim Team Head Coach, where Killion worked with Bobby Savulich coaching student athletes.

Honors In his High School Senior year in 1986, he was named a Swimmer of the Year. He was also inducted into the New Jersey Interscholastic Swimming Association Hall of Fame.