So what is the Iranian navy planning to do in NYC? Mug someone in Central Park or shell a tug boat?
I believe Iran has a two part plan.
Remember the leaders there are crazy mooselimbs.
1st, they put a nuke about a hundred yards inside Lebanon or Egypt.
2nd they put a nuke on a ship and place it 3 1/2 miles off say the Chesapeake and drop it overboard to about a thousand feet deep.
Set them both off at the same time and wella, you have one serious problem./
And if you do not think Iran is willing to sacrafice a few million moosies to criple Israel and the U.S. then you need to rethink.