Ma'am, I am just going to add to that. I think Professor Doran is right. The French have the ability, through a centralized government, to make top-down decisions and get better coordination than either of us as federations can. That's a structural difference.
President Eisenhower once said that in battle, plans are often useless, but planning proves to be invaluable. That is really the key here. We need our military, law enforcement, and militia to do two things. One, plan together, run joint exercises, do tabletop or actual in-the-field exercises to get to know each other's capabilities and operating culture and to build personal relationships that, in the heat of a crisis, they can fall back on. I think this has worked really well for Canada and the United States on the integrated border enforcement teams in dealing with some of the law enforcement challenges. There's a lot that can be done to foster that coordination through planning.
The second issue, which Professor Doran highlighted, is the importance of getting intelligence to work together, first, knowing what the other side might have access to so that you know, if you need it, where to ask for it; then second, building the trust relationships, the secure relationships for communication in a crisis, to make sure that people get the info they need and we aren't in a situation where something bad happens and later on, after action, the press discovers we did know, we just didn't know in the right place.