So I typed Unified Chain of Command into DuckDuckGo.
"The ICS command structure provides an orderly chain of command that is consistent across responding organizations. This chain of command may have either a single person, the Incident Commander (IC), at its head, or a multi-agency team, which is referred to as Unified Command. All other elements of the command structure are the same, regardless of how it is commanded."
https://www.aspcapro.org/resource/understanding-nims-and-ics
The fact that this was said on video for us to hear may have been a quiet nod to prepare yourselves for what is to come.
ICS is the command structure every agency knows, down to the lowest level BLS-certified people. It's used to rapidly organize commands in every scale of situation, be that a freeway collision or a natural disaster.
I don't think it's a habbening.
That said, ICS was developed by FEMA in response to Hurricane Katrina, if I remember right...