1. The Oklahoma City National Memorial was dedicated on July 15, 2000 to honor the victims, survivors, and rescuers of the April 19, 1995 Oklahoma City bombing. The memorial includes the Reflecting Pool, the Field of Empty Chairs, and the Survivor Tree.

2. On July 15, 1910, the town of Collinsville was hit by a tornado that caused extensive damage and claimed 8 lives. It remains one of the deadliest tornadoes in Oklahoma history.

3. The first nationally televised professional football game was played in Tulsa on July 15, 1951. The New York Giants and the Ottawa Rough Riders faced off at Skelly Stadium in front of 17,000 fans.

4. On July 15, 1965, President Lyndon B. Johnson signed the Social Security Act Amendments, which established the Medicare and Medicaid programs to provide healthcare to elderly and low-income Americans.

5. The Oklahoma City Thunder, then known as the Seattle SuperSonics, drafted Kevin Durant with the second overall pick in the 2007 NBA Draft on July 15. Durant went on to win the NBA MVP award and lead the Thunder to the NBA Finals in 2012.