1. On June 4, 1924, the first aeromedical evacuation mission in Arizona took place when a sick patient was transported from the Grand Canyon to a hospital in Phoenix by airplane.

2. In 1934, the Arizona State Game Commission declared June 4 as "Fishermen's Day," encouraging residents and visitors to fish in the state's many lakes and rivers.

3. On June 4, 1945, the USS Phoenix, a light cruiser named after the city of Phoenix, was involved in the Battle of Okinawa during World War II.

4. The Flagstaff Symphony Orchestra, which has been performing in northern Arizona since 1950, held its inaugural concert on June 4 of that year.

5. On June 4, 1998, the Arizona Diamondbacks set a team record by scoring 15 runs in a single game against the San Francisco Giants.