Events
- 1863 – American Civil War: Battle of Fort Wagner/Morris Island - The first formal African American military unit, the 54th Massachusetts Volunteer Infantry, unsuccessfully assaults Confederate-held Battery Wagner but their valiant fighting still proves the worth of African American soldiers during the war.
- 1914 – The U.S. Congress forms the Aviation Section, U.S. Signal Corps, this gives definite status to aircraft within the U.S. Army for the first time.
- 1966 – Gemini 10 launched.
- 1969 – After a party on Chappaquiddick Island, Senator Ted Kennedy from Massachusetts drives an Oldsmobile off a wooden bridge into a tide-swept pond and his passenger, Mary Jo Kopechne, dies.
- 1984 – McDonald's massacre in San Ysidro, California: In a fast-food restaurant, James Oliver Huberty opens fire, killing 21 people and injuring 19 others before being shot dead by police.
- 1986 – A tornado is broadcast live on KARE television in Minnesota when the station's helicopter pilot makes a chance encounter.