When a Naval officer is killed at a naval construction site, the team investigates. Brody and La Salle are wondering when Percy will return from her personal time off. They learn the officer had a body cam and they look at the video and see the one who attacked him and his van. They learn the man took some dynamite. They track the van and go there to get him. They catch a couple of the people there while someone gets away in a motor boat and discover one of them is Percy. Pride knows that Percy's been trying to help a friend who's mixed up with drug dealers. Pride talks to her and asks her why she didn't say anything, she says the DEA agent she's working with wouldn't let her. They learn the dynamite they stole is being used to process cocaine. So Percy approaches her friend to get her to come clean but she doesn't. Eventually they follow her and arrest her. She doesn't talk. Percy wants to talk to her but Pride won't let her. They later learn that one in the motor boat made off with ...