Jim Johannson, assistant executive director of USA hockey and general manager of the 2018 men's Olympic team, died Sunday morning.

He was 53 years old.

“We are beyond shocked and profoundly saddened,” Pat Kelleher, executive director of USA Hockey said in a statement. “As accomplished as Jim was in hockey, he was the absolute best, most humble, kind and caring person you could ever hope to meet. His impact on our sport and more importantly the people and players in our sport have been immeasurable. Our condolences go out to his entire family, but especially to his loving wife Abby and their young daughter Ellie.”

Johansson won an NCAA national title with Wisconsin in 1983, and represented the United States as a player at the 1988 and 1992 Olympics.

Upon joining USA Hockey in 2000, he worked with 10 national junior teams, and was involved in the leadership group for the 2006 and 2010 Olympic teams.