After going over all the reports, here is what I think happened:

The U.S. was going to strike, but the NSA had a hack on Iranian communications and discovered that Iran had missile locks on all the aircraft that were in the air. I strongly suspect that is what really went on, but obviously there won't be confirmation. At this point it makes the most sense - they realized that every last asset in the air was going to get obliterated and they called it off. They probably were not too concerned about the timing of it all if they decided to get the aircraft flying. Something else caused them to call it off. FACT: If Iran shot down a global hawk, all bets are off. Stealth has been defeated, and from there, a missile is a missile is a missile. It will work. And it is now proven the global hawk was 5 KM into Iranian airspace when hit. So by international law, Iran had a right to hit it. That may have played into this as well.

Obviously we are going to have to wait until about 5 PM EST to know if all attacks were really called off (that is an hour after markets close, and long before sunrise in Iran.)

UPDATE TO BELOW:
The U.S. had an attack underway, but called it off at the last minute, most likely because they want to attack at night and by the time things got going the sun was coming up.

THE FAA HAS NOW TOLD ALL U.S. BASED AIRCRAFT TO AVOID IRANIAN AIRSPACE
This would be done if the U.S. intended to clear all Iranian airspace of all Iranian aircraft. Not good.

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