We had a bit of discussion about panels 3 and 4 on this page before we decided to go with the hearts.  They’re pretty pointedly manga in a book whose style is intended to feel very traditional… even old fashioned.  But in the end, nothing communicated these men’s sick love of their weapons of choice as quickly or eloquently–and the slight goofiness fit in tonally with the macabre sort of workplace humor we were shooting for with the Nazis.