There is nothing like a really big disaster, aka Canadian wildfires, to make people and organizations re-evaluate what their response mechanisms are.
With that as an introduction, see this article: “U.S., Canada open to a ‘NORAD-like’ model of joint disaster response: Blair.”
I expect many people have no idea what is being discussed when the term “NORAD” is used. See North American Aerospace Defense Command. It is a totally integrated United States and Canadian operation.
Not a bad idea given the size and complexity of some disasters. Besides wildfires, here on the West Coast we have the Cascadia Subduction Zone that runs from British Columbia (BC) down to Northern California and is likely the largest natural disaster the USA can experience other than an asteroid hitting earth.