Kheydon Gracie joined the Army at a Sept. 22 ceremony in front of his family, including his father, Royce Gracie, the first person inducted into the Ultimate Fighting Championship’s Hall of Fame.

Former UFC champion and mixed-martial artist Royce Gracie with his son Kheydon at the U.S. Army Recruitment Center in Huntington, California. (Army Recruiting Los Angeles/Facebook) Royce Gracie ...