Many actors were willing to waive their normal fees because of the nature of the project and to lend their support. Martin Sheen provided the opening narration. Jim Garrison played Chief Justice Earl Warren, during the scene in which he questions Jack Ruby in a Dallas jail and in a TV appearance. Assassination witness Beverly Oliver, who claims to be the "Babushka Lady" seen in the Zapruder film, also appeared in a cameo in Ruby's club. Sean Stone, Oliver Stone's son, plays Garrison's oldest son Jasper. Perry Russo, one of the sources for the fictional character Willie O'Keefe, appeared in a cameo as an angry bar patron who says Oswald should get a medal for shooting Kennedy.