Sir: The nation has lost a valiant hero by the name of Chaudhry Aslam, a brave policeman who was killed by cowardly terrorists. They resorted to absolute mayhem and destruction to wipe out a formidable foe. Mr Aslam was an upstanding man of great resolve and determination. He was known as the one true crusader against Taliban elements in Karachi but now he is no more. The entire police department in this country must do the only thing it can to honour such a brave man: make it their mission to wipe out the Taliban threat. JAHAN ALI Rawalpindi