If I were to explain stealth to a layperson, I'd ask them to think of the game chupan-chupai (hide and seek) we played as children, explains Air Commodore Nitin Sathe (retd).
The CBI had registered a preliminary enquiry in 2016 which was later converted into a regular case, they added.
With the induction, the IAF would become the 19th Air Force in the world to use Hawks as its trainer frontline aircraft.
The major changes in the aircraft involved removing of two existing wing looms and their replacement with new sets of avionics developed by HAL.