Ellsworth Air Force Base near Rapid City, South Dakota, with a history dating to 1941, is regarded as a local counterpart to Area 51 where early 1950s UFO sightings and later events have fed local lore of a pattern of sightings and … #aliens #espnsiouxfalls #mar2026 #ovni #sd #uap #ufo #ufosky #usa https://espnsiouxfalls.com/ixp/481/p/ellsworth-air-force-base-mystery