Fully aware there are some pretty sketchy buildings....maintenance issues are not the only found with DND . That being said if I have a building with somewhat restricted access (i.e. not an open field), that can have enough room to have a comms tower for cell signal/wifi then we're probably rolling. Beats trying to do it off of truck tailgates via cell phones and laptops exposed to the elements....but you do what you need to do to get the job done the best you can with the resources on hand.Do you think that having wifi, or any other communications infrastructure that isn't restricted to DND/DWAN, or resembles anything introduced to the wider civilian marketplace since the 1980s, might be an adavantge in an emergency? If so, you can discount about 80% of those armouries from the get go.
Ironically, all the ones built of brick in the '19 teens' will likely fall down in a moderate earthquake, so that might solve an infrastructure problem or two
One of the biggest issues I often see is the ICP is set up on based upon land that can be used and it's not always clear where you are going...sucks to go hours out of the way due checking at the major town...only to be told to go back the way you came to hit the ICP because "no space here". Anything that you can do to better streamline the communications as to where to mobilize/meet/plan can significantly help....turn at the big rock doesn't always help when you're coming from 3 or 4 different directions.
Nature of emergency will also drastically change the comms needs and not all jurisdictions can talk to each other easy...but I've also seen major events successfully handled by establishing a meeting point and have two agency leads stay paired at the hip under unified command to pass similar commands via two completely separate radio nets - all resources accounted for and common direction = success.