Exactly. You got it. And the NEST teams have nuclear EOD guys on hand to deal with an immediate threat.
Just so you realize what precisely the situation is. The CG when they decided to bring the vessel into port for a detailed inspection was most concerned about stowaways. It was while searching for stoways that the radiation alert was sounded. Now if there were stoways then and there are none now??? The possibility of an underwater hatch is not all that remote.
Stay well - Stay safe - Stay armed - yorktown