Warren AFB, Cheyenne, Wyo

F. E. Warren Air Force Base, located in Cheyenne, Wyoming, is one of the oldest continuously active military installations in the United States, originally established in 1867 as Fort D.A. Russell. It played a key role as a cavalry post during the Indian Wars and protected the construction of the transcontinental railroad. In the 20th century, the base transitioned to an air force installation and became central to the nation's strategic missile defense with the deployment of intercontinental ballistic missiles (ICBMs) during the Cold War. Today, Warren AFB is home to the 90th Missile Wing, which operates and maintains Minuteman III missiles as part of U.S. nuclear deterrence.