As an average American I would like to express 2 concerns.
1) Did anyone actually consider that 11/9 is the inverse of 9/11. In my opinion not the best date choice!
2) Americans are used to EAS tests. In my opinion it was not necessary to announce a test of this magnititude. In addition you have alerted on a massive scale the test date to every enemy we have.
I expect more thoughtfull action from people in charge!