Air Force Magazine talks about how decisions are made when it comes to defending the “Homeland”. It is pretty unwieldy now, but there is hope that it can be streamlined.
The Coast Guard needs to be part of this, both as Maritime Domain Awareness sensors, and as potential response assets.
As new systems are designed, we need to make sure the Coast Guard is included.
Chuck Hill's CG Blog 
This is another report of the same exercise. I was pleasantly surprised to see in this report, that a Coast Guard cutter was involved.
https://www.c4isrnet.com/it-networks/2020/09/04/behind-the-scenes-of-the-us-air-forces-second-test-of-its-game-changing-battle-management-system/
“All told, about 1,500 military personnel and 60 industry teams took part in the event, which was led by NORTHCOM and U.S. Space Command. The experiment included platforms from all of the military services — everything from F-16 fighters, MQ-9 Reaper drones, a Navy destroyer and a Coast Guard cutter, as well as experimental technologies like expeditionary 5G towers and robot security dogs made by Ghost Robotics.”
It appears MSRT East was also involved.
https://www.dvidshub.net/video/765730/us-coast-guard-intercepts-radar-jammer-gulf-mexico
could have been almost anything in the container. I expected there to be FAST roping?
Its troubling that from the sound of it, currently we would still be too slow to react to a 9/11 type incident.