Thank you, Chair.
I'd like to thank all the witnesses for being here.
My questions will, initially at least, be addressed to Dr. Lajeunesse.
Doctor, in your remarks you talked about the importance of enhancing surveillance capabilities in the north. You mentioned the DEW Line and the northern warning network, which seems to follow the track of the old DEW Line.
The DEW Line was created in an era of ICBMs and threats of long-range bombers and so forth. Is that still relevant today, and in what way do these systems need to be upgraded? Do we need a warning line even farther north than that?
If you could speak to this point, I'd appreciate it.