Parr 's interest in joining the Secret Service originated as a boy after watching '' Code of the Secret Service '' ( 1939 ) starring Ronald Reagan as agent " Brass " Bancroft . He was working as a lineman for Florida Power and Light in 1962 when he was interviewed by a visiting recruiter for the Secret Service . When asked if he was able to assume the risks of the job , Parr replied it was probably no more dangerous than what he had been doing for the power company . He joined the Secret Service at age 32 , the oldest rookie in his class . His first protection assignment was John F. Kennedy and Lyndon B. Johnson at the funeral of Eleanor Roosevelt . After Kennedy was assassinated , Parr was assigned to protect Marina Oswald , and Marguerite Oswald , the widow , and the mother , respectively , of Lee Harvey Oswald until completion of Marina 's testimony before the Warren Commission
assassinated
Assassination of John F. Kennedy
Jerry Parr