Squadron Leader Vir Sain Chowdhry (7126) was commissioned in the Aeronautical Engineering (Mechanical) Branch of the Indian Air Force in January, 1963. He was posted as Armament Officer of a Fighter Bomber Squadron during the period of opera tion against Pakistan in December, 1971.

He was responsible for setting up a high standard of maintenance of the aircraft armament equipment. He ensured the training of armament personnel within a short time which enabled the squadron to become fully operational. By his ingenuity he increased the number of rounds loaded in aircraft and thus increased its fire power. This modification was subsequently accepted even by the manufacturers. He was also associated with the clearance trials of indigenous armament stores used in the aircraft.

He skillfully organized the activities of the Central Repair and Servicing Section, and thereby increased the rate of aircraft serviceability. He also undertook camouflaging of aircraft blast pens and dispersal of technical equipment.

Squadron Leader Vir Sain Chowdhry displayed dedication to duty, organizing ability and professional skill of a high order. For his distinguished service of a high order, he is awarded the Vishisht Seva Medal.