For Ops like this it is customary to ensure that members of each nation being rescued are on the rescuing team - therefore the surviving hostages can each be treated and de-briefed by there own side without some diplomatic hand-over fiasco - which has been quite embarrasing on previous occasions. I would have thought that a small team of Canadian SF would have been lodging with the lead rescuing force looking for these guys until either they were rescued or bodies were found. Not sure, but just an outside guess.