If that is true, why cover up that terrorists did it? And, why would terrorists not want to publicize that they had the capability to disrupt our air commerce, both in and around the US? If it was a tit-for-tat and the Iranians considered us to be a paper tiger, which they did, what did they have to fear if they did claim that they did it?
Don’t have answers to your questions, sorry.
I have always wondered, it it was terrorists, why didn’t they take credit?