Citing figures from the Rand Corp., the report says a nuclear blast at the Long Beach Port could cause more than $1 trillion in damage, including loss of life and destruction of homes and infrastructure.

In a section on “radiation protection basics,” the report offers a primer on what to do during a nuclear attack. “Lie face down and place hands under the body to protect exposed skin,” it recommends. “Remain flat until the heat and shock waves have passed.”

There are also sections explaining the basic mechanisms of a nuclear blast as it occurs and discussion of specific things expected to happen in the event of a nuclear attack that should be considered and prepared for in advance.