This is a use case where the no-cloud-dependency design decision
actually matters most, not just as a nice-to-have. A served-agency
activation is exactly the situation where you don’t want your
situational awareness depending on an internet service that might
itself be affected by whatever’s happening. Helioclock polls public
data feeds directly from your own hardware – if your local network and
internet are up at all, it works the same way it does on a calm
Tuesday.
For net control specifically: NWS alerts, radar, and the world clock
row (useful when a served agency spans time zones or when tracking
shift changes) cover a meaningful chunk of what a net control station
needs to keep visible.