THIRUVANANTHAPURAM: Vishnu R, 35, of Palode in Thiruvananthapuram, was among the two CRPF personnel killed in an improvised explosive device blast, allegedly planted by Naxalites, in the Sukma district of Chhattisgarh on Sunday. Vishnu had rejoined duty just a month back after visiting his home state for the housewarming of his new residence in Palode. Vishnu is also survived by …