During the assassination of President John F. Kennedy , Powers and Kenneth O'Donnell , another Kennedy aide , were riding in the Secret Service follow-up car directly behind the presidential limousine . In 1996 , the Assassination Records Review Board released three minutes of film footage captured by Powers in Dallas prior to the assassination . Powers said he began filming when the motorcade left Love Field but ran out of film at 12:17 p.m before reaching Dealey Plaza
assassination of President John F. Kennedy
Assassination of John F. Kennedy
David Powers