As per this article:
"President Trump responded to rising fears of retaliation from Iran on the U.S. military, as the conflict ramps up in the Middle East.
When asked during a phone call with Time magazine's Eric Cortellessa on Wednesday about whether Americans should be concerned about a potential strike on the homeland, Trump said, "I guess."
"But I think they're worried about that all the time," he continued. "We think about it all the time. We plan for it. But yeah, you know, we expect some things. Like I said, some people will die. When you go to war, some people will die.""
I guess that was supposed to be reassuring.
And, that's why he's the POSOTUS.