The news is gearing up for war, just like they did with Iraq. Gotta get you scared, so you let your Congresscritters and Resident-in-Chief use up a bunch of weapons and hardware, so the American economy can rebound building new war shit to stockpile after using up a bunch of the old shit.
The truth of the matter is that Iran has an army of about 250k people. The US has 1.3m. Iran has no way to deploy an expeditionary force - aka, an invasion - anywhere their 250k soldiers can't actually walk to.
So you, as a resident in America, are safe. If you work in a large Trump-owned property in a major American metropolis, you might get hit by lightning on the way to work, but there's an even smaller chance that an Iranian state-funded terrorist blows up your building and kills a couple hundred people (out of the 3-4k that work in the building).
You can - as most Americans will - simply ignore the whole thing. There's 330m of us, and about 1m of them will care or be involved in some way (most protesting against it, but probably 15k actively involved in the warring process).
Don't let the news media drive you crazy. Go to the store. Go to the coffee shop. Go to the beach. Enjoy this amazing world we live in, and know that people in Hong Kong have things to ACTUALLY worry about, while you have zilch you need to do about anything, ever.