How Did Ron Cobb Die?

Ronald Ray Cobb was an American-Australian artist. In addition to his work as an editorial cartoonist, he contributed concept art to major films including Dark Star (1974), Star Wars (1977), Alien (1979), Raiders of the Lost Ark (1981), Conan the Barbarian (1982), Back to the Future (1985), The Abyss (1989), Total Recall (1990), and Southland Tales (2006). He had one credit as director, for the 1992 film Garbo.