The rhetoric between North Korea and Washington continued to escalate, with a spokesperson for the Korean People's Army warning in a statement reported by KCNA late Tuesday, "U.S. war hysteria will only bring a miserable end of the American empire".
"Two U.S. Air Force B-1B bombers, under the command of U.S. Pacific Air Forces, joined their counterparts from the Republic of Korea and Japanese air forces in sequenced bilateral missions", a Pacific Air Forces press release said.
As North Korea responded to that Kim Jong Un-esque ultimatum with overt threats against Guam, U.S. B-1Bs based on the island drilled with their Japanese and South Korean partners, "demonstrated the U.S. commitment to regional allies, increased readiness and exercised the right under worldwide law 'to fly legally in the place and time of our choosing, '" according to a DoD news release.
The governor of Guam said later on Wednesday morning there was no change to the threat level.
But it is also home to about 6,000 United States troops and houses two U.S. military installations - the Andersen Air Force Base and the Naval Base Guam.
But Calvo said it was the military which provided protection. "Those who are against the military will keep that distinction and make that argument".
Guam's Homeland Security Adviser George Charfauros urged calm and said defences are in place for such threats.
"I know we woke up to media reports of North Korea's talk of revenge on the United States and this so-called new-found technology that allows them to target Guam", he said".
"I've kind of felt this is a good thing", she said. We're going to keep Guam safe.
The United States and Japan conducted joint air drills in skies near the Korean peninsula on Aug 8.
"It is conceivable that North Korea's nuclear weapons program has already considerably advanced, and it is possible that North Korea has already achieved the miniaturization of nuclear weapons and has acquired nuclear warheads", the ministry said in a statement, according to Reuters.
Two U.S. Air Force B-1B Lancer bombers under the command of Pacific Air Forces joined their counterparts from the South Korean and Japanese air forces August 7 in sequenced bilateral missions.