Nuke subs nearby need I say more! Not to mention several aircraft carriers and many guided missile capable escort ships just over the horizon. They cant out shoot us, even the Russians realized this back in the day.
I have a question.... and this requires some soul-searching...
Does the US have the guts to actually pull the trigger on some nukes if Iran were to strike first? I truly question if we have the intestinal fortitude. AT this point, I am wondering if we even have what it takes to carry out any real conventional attack on Iran. We have let them go unabated for too long, and now Russia is knocking off the rust from their war machine.