Events
- 1778 – American Revolution: First Battle of Ushant – British and French fleets fight to a standoff.
- 1789 – The first U.S. federal government agency, the Department of Foreign Affairs, is established (later renamed Department of State).
- 1862 – Sailing from San Francisco to Panama, the SS Golden Gate catches fire and sinks off Manzanillo, Mexico, killing 231.
- 1928 – The animated short A Wild Hare is released, introducing the character of Bugs Bunny.
- 1953 – Korean War ends: The United States, People's Republic of China, and North Korea, sign an armistice agreement. Syngman Rhee, president of South Korea, refuses to sign but pledges to observe the armistice.
- 1964 – Vietnam War: 5,000 more American military advisers are sent to South Vietnam bringing the total number of United States forces in Vietnam to 21,000.
- 1972 – The F-15 Eagle flies for the first time.
- 1974 – Watergate Scandal: The House of Representatives Judiciary Committee votes 27 to 11 to recommend the first article of impeachment against President Richard Nixon: obstruction of justice.
- 1995 – In Washington, DC, the Korean War Veterans Memorial is dedicated.
- 1996 – Centennial Olympic Park bombing: In Atlanta, Georgia, a pipe bomb explodes at Centennial Olympic Park during the 1996 Summer Olympics, killing two and injuring 111.
- 1996 – In Atlanta, Georgia, Canadian sprinter Donovan Bailey set the 100m world record of 9.84s +0.7 m/s wind during the 1996 Summer Olympics.
- 2005 – STS-114: NASA grounds the Space Shuttle, pending an investigation of the external tank's continued foam–shedding problem. During ascent, the external tank of the Space Shuttle Discovery sheds a piece of foam slightly smaller than the piece that caused the Space Shuttle Columbia disaster; this foam does not strike the spacecraft.
- 2007 – Phoenix News Helicopter Collision: News helicopters from Phoenix, Arizona television stations KNXV and KTVK collide over Steele Indian School Park in central Phoenix while covering a police chase; there were no survivors. This was the first known incidence of two news helicopters colliding in mid-air, and the worst civil aviation incident in Phoenix history.