Atlas F ICBM (SMS 577) base. Originally a training base in World War II, Altus was reactivated as a transport and bomber base in 1953. It hosted B-47 bombers until 1958, B-52's thereafter. In 1960 the base was designated as headquarters for the 577th Strategic Missile Squadron with twelve Atlas F missiles. The Air Force acquired 52 square kilometers in Oklahoma and Texas for the silo complexes. After a heroic construction effort, the first Atlas F was placed on alert status in August 1962. All 12 were available for nuclear strikes against Russia in the Cuban Missile Crisis two months later. Launch complex 577-6 was destroyed in an explosion on 14 May 14 1964 during propellant loading training. The Atlas missile had a short operational life due to its poor reaction time and the squadron at Altus was deactivated on 25 March 25 1965.

• 577-1 - Latitude: 34.9258 deg. Longitude: -99.2611 deg.

• 577-2 - Latitude: 35.0269 deg. Longitude: -99.1714 deg.

• 577-3 - Latitude: 34.6886 deg. Longitude: -98.9422 deg.

• 577-4 - Latitude: 34.6158 deg. Longitude: -98.6606 deg.

• 577-5 - Latitude: 34.5625 deg. Longitude: -98.9619 deg.

• 577-6 - Latitude: 34.4381 deg. Longitude: -99.0153 deg. Used by: Atlas. First Launch: 1964-05-14. Last Launch: 1964-05-14. Number Launches: 1.

• 577-7 - Latitude: 34.3622 deg. Longitude: -99.3242 deg.

• 577-8 - Latitude: 34.5267 deg. Longitude: -99.5400 deg.

• 577-9 - Latitude: 34.6847 deg. Longitude: -99.8342 deg.

• 577-10 - Latitude: 34.8178 deg. Longitude: -99.5906 deg.

• 577-11 - Latitude: 35.0617 deg. Longitude: -99.4972 deg.

• 577-12 - Latitude: 34.9544 deg. Longitude: -99.4278 deg.

1962 May 5 - Launch Vehicle: X-15. X-15 (3-C) Eglin Demonstration mission Agency: NASA/USAF. Apogee: 14 km (8 mi).