A sheepdog's got his hands full trying to keep his own flock safe. 每集一個故事，六人小組或解救人質(zhì)、或暗殺、或爆破、或撤僑、或換俘、或反恐，這是海軍特種作戰(zhàn)群（United States Naval Special Warfare Development Group），強(qiáng)大的情報支援、后勤裝備，展現(xiàn)了美軍全球即時投射作戰(zhàn)能力。