Guam's government is giving sound advice for surviving a nuclear disaster, says one expert.
The government of the U.S. territory issued a two-page fact sheet on Friday, after North Korea vowed to launch an "enveloping strike" in the waters around the Pacific island.
It recommends doing things such as making lists of nearby concrete buildings that could serve as shelters, taking cover if outside during an attack, and removing clothing that might have radiation on it.
While the idea of a nuclear attack is unthinkably frightening, the Guamanian government's preparations highlight the fact it is possible to survive some of them, if people take the right steps.
"The fact sheet looks pretty good. I think we need more of that sort of thing in the U.S. generally," said Irwin Redlener, director of the National Center for Disaster Preparedness at Columbia University's Earth Institute and a professor at the university's Mailman School of Public Health.
"Frankly, I think it is excellent," he added.
The size of the bomb North Korea appears to have developed is thought to be roughly the size of the bombs dropped on Hiroshima and Nagasaki, which would make it somewhere around 15 or 20 kilotons, Redlener said.