Jon Spencer, son of Coast Guard Chief Petty Officer Paul Spencer, demonstrates tae kwon do techniques with the instruction of Brad Tinnon, Action Arts Academy tae kwon do instructor, during the Family Fun Day event in the Shellbank Fitness Center at Langley Air Force Base, Va., April 2, 2011. Langley hosted three hours of fun to promote healthy living for all military personnel and their families. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)