DRDO is an agency of republic of India it charged with the militarys research and development, headquarted in Delhi.Formed in 1958 by merger of technical development established and the director of tech development and production with defence science organisation. It's under comtrol of Ministry of defence govt of India DRDO is india's largest and most diverse research organism . In this organisation 5000 scientist are belonging to the Defence Research and Development Service and abt 25000 scientist are technical and Supporting Personnel.