" He was awarded the Padma Bhushan in 1981 and around that time was asked to take charge of the Guided Missile Development Programme at the Defence Research and Development Organisation (DRDO) by Dr Raja Ramanna. Here he went on to develop India’s missile programme with the missile systems Prithvi, Trishul, Nag, Akash and Agni taking shape at this time. "

― A.P.J. Abdul Kalam , The Righteous Life: The Very Best of A.P.J. Abdul Kalam