We probably think an Israeli attack with some covert US help will not lead to an Iranian counterattack. I think we may be wrong there.
We may see an Iranian counter attack into Iraq, which would leave us no choice but for a defensive war to take out the Iranian regime. Unfortunately, Iran will probably launch covert terror in Iraq, Israel and the USA.
I'd rather see us take that last bridge and finish the Iranian threat on the ground, but I doubt we are planning that.
Saw somewhere that Israel took possession of 500 bunker buster bombs that we sold them a while back and they have taken delivery of some heavily modified F-16's with increased on-board fuel capacity in addition to drop-tanks. They can easily fly to Iran and return without refueling.
I do not expect to see anything in the media in advance of the attack, and I certainly hope we are able to achieve tactical surprise.
I doubt that we will be able to achieve STRATEGIC surprise. We will feel a need to advise key allies in advance, and hence I strongly suspect Iran will be made aware of our overall intentions by one or more of these "allies".