At the time that President Kennedy was assassinated in Dallas on November 22, 1963, RFK was at home with aides from the Justice Department. J. Edgar Hoover called and told him his brother had been shot. Hoover then hung up before he could ask any questions. Kennedy later said he thought Hoover had enjoyed telling him the news. Kennedy then received a call from Tazewell Shepard, a naval aide to the president, who told him that his brother was dead. Shortly after the call from Hoover, Kennedy phoned McGeorge Bundy at the White House, instructing him to change the locks on the president's files. He ordered the Secret Service to dismantle the Oval Office and cabinet room's secret taping systems. He scheduled a meeting with CIA director John McCone and asked if the CIA had any involvement in his brother's death. McCone denied it, with Kennedy later telling investigator Walter Sheridan that he asked the director "in a way that he couldn't lie to me, and they [the CIA] hadn't".