Centralized sounds good ... but the reality is that the National Guard and Army don't have the kind of ties with local organizations that ultimately deliver lots of service, your nonprofits, churches, humanitarian organizations. Those types of linkages get built up over time, in local communities.
You have these 'hot towers', tropical storm clouds acting like chimneys to carry heat to the upper atmosphere.
I doubt if many of my contemporaries, especially the older ones, did many exercises. I have often tried to picture (Godfrey) Evans and (Denis) Compton doing press-ups in the out field before the days play, but so far have failed miserably.
