Former US Army Sergeant Kari Miller lost both her legs when a car she was in was hit by a drunk driver while she was on leave from military duty in 1999. She discovered sitting volleyball after playing other wheelchair based sports including her favorite, wheelchair basketball. Through dedicated training and coaching, she made the US Paralympic Team. She started competing for the Paralympic Games in 2007 where she won a Silver Medal for her participation at the Sitting Volleyball Invitational. In 2008, she participated at the World Organization Volleyball for Disabled where she won a Bronze Medal and the same year got another Silver Medal for her participation at 2008 Paralympic Games in Beijing, China.
During this time Kari began working for the US Paralympic Military program and was responsible for setting up the program for newly injured service members at Walter Reed, Bethesda naval, and Ft Belvoir facilities, with an emphasis on positive profile utilization (what the service member can do vs cant). In 2009, Miller was awarded as Paralympian of the Year. In 2010, she won a Silver Medal at the Parapan American Championship which was held in Colorado and the same year got a Gold Medal for another WOVD Championship. In 2011 and 2012 respectively she won three Gold Medals at ECVD Continental Cup, Parapan American Zonal Championship, and Volleyball Masters. She also got a 4th Silver Medal for her participation at 2012 Paralympic Games in London and ultimately a Gold Medal at the 2016 Paralympic Games in Rio.
Throughout her Paralympic career Kari has also worked with multiple services to create adaptive programing and events. Kari also created and ran the community programs US Air Force wounded ill and injured program. Kari has served as sitting volleyball coaches for both Army and Air Force sitting volleyball teams for the Wounded Ill and injured.