1. In 1949, the Wyoming Air National Guard was officially established on June 4th. It was initially known as the 187th Fighter Squadron and served in both the Korean War and the Gulf War.

2. On June 4, 1923, the town of Moran, Wyoming was destroyed by a massive wildfire. The fire started in nearby Grand Teton National Park and quickly spread to the town, destroying 32 buildings and killing two people.

3. Wyoming Governor Milward Simpson declared June 4, 1954 as "Armed Forces Day" in honor of those serving in the military. This tradition continues to this day as "Military Appreciation Day".

4. On June 4, 1876, the Battle of Powder River took place in northern Wyoming between the U.S. Army and a group of Native Americans. Though the battle was small in scale, it marked the beginning of a larger conflict that would eventually become known as the Great Sioux War.

5. In 1919, Wyoming became the 27th state to ratify the 19th Amendment to the U.S. Constitution, which granted women the right to vote. The amendment was officially adopted on August 18th of that year, but Wyoming's ratification played an important role in the fight for women's suffrage.