If we're going to use the first meeting as an opportunity to gauge where things are now and what might be possible, it would be good to have a number of the officials together. We may want to leave open the possibility of having them come back later on.
We may find that we have some questions now, but then we'll hear from others about modality, feasibility issues and security issues. We might want to come back with questions that we aren't thinking about now, but which may come up based on what we hear in testimony or in questioning witnesses. At that point, we may want to bring back the officials from the House of Commons to ask them those questions that have come up through the course of the study.
That would be my thinking. Bring them all in now, but then we may want to bring all of them, or some of them, back for additional questions later.