Sri Vijaya Puram, June 2: Shri Ravindra Singh Yadav, IPS, on joining the Andaman and Nicobar Administration and assuming the Charge of DGP, Andaman and Nicobar Police, called on Admiral D K Joshi, PVSM, AVSM, YSM, NM, VSM (Retd.), Hon’ble Lt. Governor, A&N Islands and Vice-Chairman, Islands Development Agency today at Lok Niwas.