As I mentioned in my opening statement, I am usually with the Prime Minister when he's briefed on these matters. It's actually pretty rare for me to have formal briefings alone. It doesn't never happen, but it's pretty rare. It's usually a question of scheduling when that happens, more than anything, because it's really based on the NSIA's advice.
Sometimes other staff who are in the office, other senior staff, will meet with officials or they'll read something in reporting and they'll say this is something that we should make sure the PM sees sooner rather than later. Ultimately, though, even those thoughts will go to the NSIA who will make the ultimate recommendation on what needs to be scheduled, who should be there and in what format he should get briefed.