It is particularly focused, I think, on the security aspects. Its major focus is on enabling us to ascertain the identity of people.
One of the issues, of course, which I understand Canada has experienced, is that if you have a mass arrival, the crew, the people who are organizing and involved in the business side of it, are liable to have spent part of the journey destroying their own documents and developing stories to enable themselves to look like people who are in need of protection. So part of the identity verification aspect of the detention is being able to winnow those people out.