1. In 1916, the Arizona National Guard was sent to the Mexican border as part of a mobilization effort during the Mexican Revolution. It was during this time that Pancho Villa and his forces raided Columbus, New Mexico, leading to a retaliation by the US military.

2. On July 16, 1918, former Arizona Governor George W. P. Hunt was elected to his seventh non-consecutive term as governor, making him the longest-serving governor in US history.

3. In 1952, a group of 16 Hopi men were allowed to enlist in the US Marine Corps as part of a program to integrate Native Americans into the military. This was a significant step towards breaking down barriers of discrimination and segregation.

4. On July 16, 1979, the Arizona insect known as the Palo Verde Root Borer was designated as the official state insect.

5. In 2018, the world-renowned spacecraft manufacturing company, Orbital ATK, opened a new facility in Chandler, Arizona. The state-of-the-art facility employs over 2,000 people and is responsible for the production of launch vehicles and spacecraft for major missions around the world.