WITH CANADIAN TROOPS IN AFGHANISTAN - Canadian engineers discovered two dead al-Qaeda fighters in an extensive cave complex in a mountainside yesterday after firing two rockets into it during offensive operations.The Canadian soldiers also found a cache of mortars, grenades and rockets, including a 107- millimetre rocket -- which has an 8 1/2-kilometre range -- set up ready for firing. There was also a wood stove. All the weapons in the caves were destroyed.Lieutenant-Colonel Pat Stogran, commander of the Canadian contingent in Afghanistan, said Operation Harpoon, which began on Wednesday, is going "swimmingly."There have been no Canadian casualties, although some...