Alexander, an IAS officer, served as Governor of Maharashtra till the age of 72. Brajesh Mishra, an Indian Foreign Service officer, served former Prime Minister of India Atal Behari Vajpayee till the age of 76. TKA Nair, an IAS officer, served as Adviser to Prime Minister Manmohan Singh till the age of 73. Pulok Chatterjee, an IAS officer, served Manmohan Singh till the age of 65. K Padmanabhaiah was working as interlocutor for the North-East for almost 10 years after retiring as Home Secretary. BN Yugandhar, after retirement as Principal Secretary to late Prime Minister PV Narasimha Rao, worked elsewhere for many years and was brought back as Member, Planning Commission in UPA-I. SS Sidhu after retirement served in ICAO, a UN body, as its head and later as Governor, Manipur and Goa. ESL Narasimhan, after retiring as Director, Intelligence Bureau, has been serving as Governor of Chhattisgarh and Andhra Pradesh for the last eight years.