as Secretary, DRDO, 1997
September 15, 1998
Former Defence Minister,
November 15, 2000
Former Prime Minister, October 23, 2004
Former President, July 17, 2006
Former Chairman, Atomic Energy Commission,January 25,2008
Director General, IAEA, Vienna, September 27, 2009
Principal Secretary to the Prime Minister,July 09,2011
March 21, 2013