Dietrich volunteers for a stress analysis study on police officers, and as a result causes Barney and his colleagues concern when the harness he's wearing stops working when he goes on an assault case. Harris and Wojo go on a call to NYU, where a Peace Corps recruiter causes a disturbance at job fair. Meanwhile, Inspector Luger stops by to express his displeasure in the letter Barney wrote for him to send his mail order bride.