Question: who initiated  a program for the upgrades of the military avionics and electronics system of its aging family of single-seat, single-engine, fighter aircraft developed and manufactured by French aircraft company Dassault Aviation?
Sentence (from "Dassault Mirage III"): The Dassault Mirage III (] ) is a family of single-seat, single-engine, fighter aircraft developed and manufactured by French aircraft company Dassault Aviation.
Relevant evidence: Yes