STEFFEN PETERS DRESSAGE DEMONSTRATION ADDED TO LONGINES MASTERS OF LOS ANGELES PROGRAM EEM and Olympic Dressage Rider Will Bridge the Gap Between Disciplines During Longines Masters of Los Angeles CSI5* Show Jumping Competition   LOS ANGELES, CA (July 27, 2015)   – EEM is proud to announce a world class dressage demonstration at the upcoming American leg of the Longines Masters series in Los Angeles, October 1-4.