By Mike De Souza OTTAWA (Reuters) - Canada's spy agency must have national standards to improve how its regional surveillance teams share information, the chairwoman of the agency's civilian watchdog said in the wake of the killings of two Canadian soldiers last week. The comments by Deborah Grey, chairwoman of the Security Intelligence Review Committee (SIRC), come after a report from her committee last week said the Canadian Security Intelligence Service's (CSIS) regional teams "operate in total isolation from one another and communicate only sporadically with their HQ counterparts." "We need to make sure that each region knows exactly what the other regions are doing, under the umbrella of the headquarters, of course," Grey told Reuters on Thursday. "You need national standards right across the country because (criminals) are pretty mobile." The performance of Canadian police and security services is under scrutiny after a gunman last week killed a soldier in Ottawa, then stormed the country's Parliament building.