"They're not going to make an out of the blue strike against the U.S., Japan, Guam or South Korea because they know that's national suicide", said Daryl Kimball, Executive Director, Arms Control Association.
Trump also praised the possibility of rising tourism in Guam.
The move was triggered after the North Korean regime warned on Thursday that it was "seriously examining" a plan to simultaneously fire four intermediate-range ballistic missiles over western Japan in an "enveloping strike at Guam". "It just looks like a attractive place", he said.
During the phone call Mr Calvo laments criticism of Mr Trump, saying "from a guy that's being targeted, we need a president like you".
"We are improving our readiness not only in the air, but as a logistical support team", Col. R. Scott Jobe, the 35th Fighter Wing commander, said in a statement.More news: Trump says he's seriously considering pardoning former Sheriff Joe Arpaio
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The president then takes a jab at his predecessors, telling Calvo, "They should've had me eight years ago or at least somebody with my thought process because that was the time".
Approximately 40 per cent of Guam's population of 162,000 is made up of the indigenous Chamorro people, while another 25 per cent are Filipino.
On Tuesday, President Donald Trump threatened to unleash "fire and fury" against North Korea in response to reports it has gained the ability to launch nuclear warheads on intercontinental ballistic missiles.
"Definitely want it to just chill out", she said. "It looks lovely, you know I'm watching - it's such a big story in the news".
Pedestrians walk past a TV screen in Tokyo, Japan, on August 9, 2017, showing footage of North Korean leader Kim Jong-un. "So we place our confidence on our military partners".
Turkelson says even though South Koreans are concerned about the tension and threats of violence, they're going about their daily lives, business as usual.