Expert Couldnt Answer News Today

Over the person doing the shooting, and that the clothing is 2 to 4 inches away from the person firing. >> reporter: di maio countered the medical examiners testimony for the prosecution who said martin could have survived and suffered up to ten minutes after she was shot. di maio said shot in the heart, martin would have been unconscious in 10 to 15 seconds. >> hes going to be dead within 1 to 3 minutes after being shot in this case. >> reporter: finally, demayo testified that zimmermans injuri...

>> reporter: he also countered the medical examiners testimony for the prosecution who said martin could have survived and suffered up to ten minutes. >> hes going to be dead within one to three minutes after being shot in this case. >> reporter: finally, he testified that zimmermans injuries fit his account, saying his review of photographs taken that night indicated zimmermans head suffered at least six impacts. >> is this injury consistent with mr. zimmermans head having impacted a sidewalk? ...