A Petty Officer, who is a member of the prestigious Navy band, is found murdered and her nephew is the only witness to the crime. Meanwhile, Gregorio considers staying in New Orleans or returning to Washington D.C.. Also, Percy finds out about LaSalle's child and Sebastian considers applying to be an NCIS agent.
Sebastian is seen examining the construction site for samples which might contain PCBs while wearing only a paper filter mask. A mask like that will only protect against particles like dust or pollen, not chemicals contained in water or soil.
The music teacher is wearing a brown with white dots, long top, over a brown sleeveless T-shirt. From the side the top is not covering her chest. From in front it covers her chest. Despite crossing her arms part way through her appearance and keeping them folded. With her arms folded the view changes to from the side, top not covering, then in front view, top covering. It ends with a front view with top not covering.