A senator in Guam, Brant McCreadie, says local people need information from the government on how best to protect themselves in case of an attack by North Korea.
Military tensions on the Korean peninsula are at their highest in years, with Pyongyang expressing anger at the use of US bombers and submarines in ongoing joint military drills with South Korea.
Guam is one of the closest US bases to the peninsula.
Senator McCreadie says people are concerned and he says the government should be proactive and disseminate information such as where to go in case of an attack and how schools should react.
"If there is a plan I'm just saying now would be a time to disseminate the information and the plan and if there's not a plan then now would be the time to convene an advisory council to address this issue of readiness."
Brant McCreadie says it may be that it is safest for people in their own homes which are mostly made of concrete.