But according to USA president Donald Trump, the threat of nuclear armageddon will be good for local tourism.
Governor Eddie Baza Calvo shared a video of his call with President Trump on Facebook, in which the President assured Mr Calvo the United States was behind the remote Pacific island "1000 per cent". We would act. President Trump has basically drawn a red line.
"Governor, I just want to let you know we're with you 1,000 percent", Mr Trump told Mr Calvo.
Pyongyang said this week it is planning to launch four missiles into waters near the coast of Guam, which is a major U.S. military hub with a population of 163,000 - all of whom are technically USA citizens.
"The circumstances are unfortunate but this is a good opportunity for us to educate the world about Guam and our culture, about where we are, and who we are", Guam Visitors Bureau marketing director Josh Tyquiengco told AFP.
The three-minute conversation was recorded in a video published by Mr Calvo's office. They should have had me eight years ago, somebody with my thought process, because that was the time. We are with you 1,000 per cent.
After the tourism discussion, the two talked more about North Korea and how to deal with someone like Kim Jong Un and about partisan rancor and obstructionism in Washington, D.C. "It looks attractive, you know I'm watching.it's such a big story in the news".
"You seem like a hell of guy", Trump said later in the call.
"I wish there would be less partisanship up there, this is a time of threats to the United States", said Calvo.
Trump continued to exchange pleasantries with Calvo, saying that the governor had "become famous", and suggesting that he would visit the USA territory in the future.
"I have to say, Eddie, you're going to become extremely famous".
Before speaking to Mr Calvo, Mr Trump told reporters in New Jersey that he believed Guam would be "very safe" and threatened North Korea with "big, big trouble" if it launched an attack. Guam Homeland Security additionally released a fact sheet on how to prepare for an imminent missile threat.
The statement said that in the event of a strike, people "should 'take cover, take shelter immediately, not look towards what could be the blast area in fears of being blinded, '" Almaguer said.