USA Gymnastics Chief Operating Officer Ron Galimore resigned Friday as the organization continues to flounder in the aftermath of the Larry Nassar sex abuse scandal. Galimore, a 1980 US Olympian who had served in the position since 2011, was the highest-ranking official left at USA Gymnastics who was employed while Nassar's crimes were committed. Other top officials, including president and chief executive Steve Penny, previously resigned or were forced out.