zim zimmerman zimmerman. i think he s thought to be bigger because he s older but in truth he s probably the smaller figure. as the testimony comes in it sounds like the witnesses believe that trayvon martin was in sort of the submissive position with zimmerman on top. it s not very clear this testimony. a lot of it fairly subjective too in way. another thing that s interesting is trayvon martin s mother was told she couldn t hold back her tears. no doubt jurors saw that too. yesterday the father walked out when jurors were shown photos of trayvon martin s body. tell us about those shows of emotion, graphic pictures, testimony and the like, hold up they impact the jury and the outcome of the trial. reporter: this is part of the building block of murder case. i ve tried a lot of murder cases as a prosecutor myself and i always would sit down with the parents and say there s going to be some tough moments. you re going to see pictures of