Sunset for MiG 21s as squadron retires fighters after 57 years
The IAF's Uttarlai (Rajasthan) based 4 Squadron has been operating various types of MiG 21 for 57 years and was one of the last three remaining units operating the Bison version of the aircraft. The two remaining MiG 21 Bison squadrons are expected to phase out the fighters by 2025.