In the late 1960s , Cappucci was commander of the 1005th Special Investigations Group , which gave him access to many individuals in the intelligence community including a close and long-term relationship with former FBI director J. Edgar Hoover . During a dinner at a hotel in Rome , Italy , with Lieutenant Colonel William H. Amos and his wife , Cappuci talked at length about inside knowledge of Mary Jo Kopechne 's death inside of former Senator Ted Kennedy 's car at Chappaquiddick Island , MA . It became clear to Mrs. Amos , Cappucci obtained inside information about the investigation of the accident from Hoover and how Ms. Kopechne 's parents agreed to a settlement with Senator Kennedy to remain silent . Afterwards , the conversation turned to former President John F. Kennedy 's assassination wherein Cappucci told the couple , " it was no wonder LBJ had JFK killed . " After the dinner , Lt Col Amos told his wife to never repeat what Cappucci said , which she did for nearly 50 years
assassination
Assassination of John F. Kennedy
Joseph J. Cappucci