858th Radar Squadron  The 858th Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 26th Air Division, Aerospace Defense Command, stationed at Fallon Air Force Station (Naval Air Station Fallon), Nevada. It was inactivated on 30 June 1975. The unit was a General Surveillance Radar squadron providing for the air defense of the United States. Lineage  Assignments  Stations