The Olympic Games showcase not only legions of top athletes and coaches but also the skills of some of the world's best sports officials. Coordinating those overseeing both men's and women's volleyball competitions will be Gary Colberg, director of intramural sports at UC Davis. Colberg, who is experienced at international officiating, will be in charge of scheduling, evaluating, testing and assigning officials for one of the most popular sports in the summer Olympics. Volleyball is one of the few sports that spans the entire length of the Olympic schedule, and each day there are six matches at two sites. But this is familiar ground for Colberg, who worked as an official at the 1984 Olympics in Los Angeles. He has officiated at more than 200 international matches in his career and at a number of collegiate national tournaments. Colberg is also responsible for establishing a drug-testing program for officials at the Olympics -- one of the only sporting events where officials are subjected to the same testing as the athletes. "My role is to make sure everything hums," Colberg says. "This will be fun because I'll be right in the center of the action." Colberg is responsible for making sure two officials, four line judges and two scorers are available for every match of both the men's and women's tournaments.