Looks like a test of the base defenses/security.
Option 1) Foreign intelligence (through proxies or otherwise) testing to see what they can get away with, and a bonus for any intel they can gather.
Option 2) Some domestic national security entity, also testing defenses/security. Sorta like “White hat” hacking. For the betterment of security.
Option 3) Domestic (compartmentalized) entity testing their own surveillance technology, to see how much they can get away with, but not specifically to test security. Trials on domestic targets as practice.
Option 3 would explain why all enforcement and local/state governments appear to be told to stand down and not intervene.
Option 4: Could it be that our intelligence people are looking for something that the newcomers have brought in for another 911 and the admin don’t want to scare us - admitting they were wrong to let all these newcomers into this country in the first place?