The events of 9/11 happened 17 years ago had nothing to do with technology. Whether they came from a less superior civilization is a matter of opinion as well as quantifying the degree of damage caused. The center of the economic enterprise of America is still in affect. What makes you believe that America was spiritually covered in the first place, let alone have this same covering removed? I started to move forward with my life the day after the attack and it holds little or no spiritual or biblical significance today.
There are consequences for using the Christian banner and not living up to its moral standards. I believe judgment is coming for that very reason.