Lyndon B. Johnson

===Succession===
{{Main|First inauguration of Lyndon B. Johnson}}
{{Further|Assassination of John F. Kennedy}}
[[File:Lyndon B. Johnson taking the oath of office, November 1963.jpg|thumb|Johnson is sworn in as [[President of the United States|president]] aboard [[Air Force One]] at [[Dallas Love Field]] two hours and eight minutes following [[Assassination of John F. Kennedy|Kennedy's assassination]] as [[Lady Bird Johnson|Mrs. Johnson]] and [[Jacqueline Kennedy Onassis|Mrs. Kennedy]] look on.]]
On November 22, 1963, [[Assassination of John F. Kennedy|Kennedy was assassinated]] by [[Lee Harvey Oswald]] in [[Dallas]], Texas. Immediately following Kennedy's assassination, Johnson likely suffered a second [[Myocardial infarction|heart attack]]. According to media reports, Johnson "was rushed to the emergency room. He appeared scared out of his wits, his face was pale and he was holding his chest. The physician who saw him thought that he was having another heart attack (probably correctly), but the final diagnosis released to the public was that he was suffering only from [[angina]]."<ref>[https://www.villages-news.com/2019/02/06/lyndon-baines-johnsons-heart-attacks/ "Lyndon Baines Johnson's heart attacks"], ''Villages-News'', February 6, 2019</ref><ref>{{Cite web |last=Schwartz |first=Allan B. |date=November 20, 2016 |title=Medical Mystery: Before he was sworn in, pain gripped LBJ |url=https://www.inquirer.com/philly/health/20161120_Before_he_was_sworn_in__pain_gripped_LBJ.html |access-date=November 13, 2023}}</ref><ref>{{cite web | url=https://www.villages-news.com/2019/02/06/lyndon-baines-johnsons-heart-attacks/ | title=Lyndon Baines Johnson's heart attacks | date=February 6, 2019 }}</ref>