Saab JA-37 Viggen Air Superiority

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The Saab JA-37 Viggen was used exclusively by the Swedish Air Force (Flygvapnet) and never saw active combat service with any other country.
 
Operational Deployment
Geographic Focus: The aircraft operated from airbases and specialized public road strips across Sweden.
Primary Areas of Patrol: It primarily patrolled the Swedish Baltic coast to guard national airspace.
Timeframe: The JA-37 variant entered service in 1980 and flew until the Viggen fleet was officially retired in November 2005, replaced by the Saab JAS 39 Gripen.
 
Main Roles and Notable Incidents
The JA-37 "Jaktviggen" (Fighter Viggen) was explicitly built as an all-weather fighter-interceptor.
Cold War Interceptions: It acted as a deterrence platform against Soviet aircraft encroaching near Swedish territory.
SR-71 Blackbird Events: On multiple occasions during Quick Reaction Alert (QRA) sorties, Swedish JA-37 pilots successfully achieved radar locks on ultra-fast U.S. SR-71 Blackbird spy planes transiting the Baltic Sea.
1987 Emergency Escort: Most famously, on June 29, 1987, a pair of JA-37 Viggens intercepted and safely escorted a crippled SR-71 that suffered an engine explosion over the Baltic.
 
Failed Export Attempts
Saab actively marketed the Viggen internationally to countries like India, Austria, Australia, and several NATO nations (including Belgium, Denmark, the Netherlands, and Norway). However, political blockades—such as the United States withholding technology transfer permissions for the jet's modified American engine—and stiff competition from the F-16 Fighting Falcon resulted in zero export sales.