Kathleen Kennedy , the venerable filmmaker and former president of Lucasfilm , spent her Sunday singing the praises of American sound designers. The prolific producer-turned-executive received an honorary award from the Motion Picture Sound Editors at the group’s annual Golden Reel Awards in Los Angeles — marking a distinguished career responsible for indelible movie moments across titles like “Jurassic Park,” “Back to the Future” and “Schindler’s List.” “Sound helps root the story. It helps