In 1927 the silent film Wings, a World War I film about two American aviators, won the first Academy Award for Best Picture. When it was being filmed, production stopped for several days. Frustrated producers asked the director why. He responded: “All we have is blue sky. The conflict in the air will not be as visible without clouds. Clouds bring perspective.” He was right. Only by seeing aerial combat with clouds as a backdrop could the viewer see what was really going on.