There is a slim possibility that if it was airtraffic control equipment upgrades, but that would be put in the bullitin and known about long in advance, that it

There is a slim possibility that if it was airtraffic control equipment upgrades, but that would be put in the bullitin and known about long in advance, that it is just imposed with no warning is wrong and just shows how the FAA is becoming more 3 letter every day.