Harm receives his second DFC. Mic prosecutes a sailor accused of smuggling marijuana, and Mac defends; Harm and Bud seek a witness and rescuer who disappeared after an attempted rape. Chemistry and talk occur among Harm, Mac, and Mic.

The DoD has hired a retired SEAL to test physical security arrangements; his methods are extreme. He captures a submarine and takes her to sea. Bud serves as the official observer; Harm lends a hand. Gunny meets resistance and resentment.