Our government does a pretty god job of discrediting itself. It will no doubt perform incompetently if there is a mass-casualty event.
Or do you trust the kind of people you find at TSA checkpoints to keep you and your family safe?
Speculation about how "our government" will do in the face of "mass disaster" is unnecessary.
Remember 9/11? Hundreds of NYFD men and women selflessly gave their own lives when duty called. Sad and tragic as it is (I include them and their families in my prayers..as I am certain many Americans do).
The outbreak of war hostilities in our homeland will hardly compare to the occasional "goosing' your Grandma gets at the JAL check-in counter. Pal.
This is America.