Perhaps I can jump in, Mr. Chair.
I would refer the members of the committee to the information put before them in terms of the range of other tools that are available in each and every case. Upon referral, where we do have indications of a possible national security concern or a risk indicator—it doesn't mean there is information present at that time—we can apply a range of tools. You'll see in the material that we put to the committee that this can include, as we discussed this morning, checks with international partners, reviews of open sources and other tools.
I will refrain from getting into the specifics of our capabilities as it relates to the member's specific question in terms of technical capabilities and methodologies. What I can say in answer to part of the concern I'm hearing from the committee is that while I said this morning that there is an increasing and intensifying risk as it relates to violent extremism, the members should be assured and Canadians should be assured that there is a very small number of people who are present in Canada who are willing to mobilize to violence.