Friday marks the 50th anniversary of the assassination of President John F. Kennedy. The Academy of Motion Picture Arts and Sciences is commemorating his life with a screening Friday evening at the Linwood Dunn Theater in Hollywood of the award-winning documentary "John F. Kennedy: Years of Lightning, Day of Drums." Written, directed and scored by Bruce Herschensohn and produced by George Stevens Jr., the film was made in 1964 by the U.S. Information Agency for overseas distribution. Released in the U.S. in 1966, the domestic profits were used to fund the building of the John F. Kennedy Center of the Performing Arts. Emmy- and Oscar-winner Aaron Sorkin, who created "The West Wing," will introduce the screening. For more information, go to http://www.oscars.org.