their motivation is, but they wanted to hurt and kill people. you re correct. i think they wanted to hurt people in a way that s hard to understand, but they didn t want to have necessarily a high body count, but a high terror count, and they wanted to maim and terrorize people. i think to terrorists sometimes an injured or an amputated limb is sometimes more powerful than a dead body, because then we as a nation and as a community look at those people, hear those people, we hear their story, and it creates more terror, not more safety. sean: mark, stay with us. we ll be back with you later in the show tonight. we ll check back in. let me bring in now terrorism expert steve emerson and forensic video analyst grant fredericks. grant, i ll start with you. you ve seen the video. what s your analysis? the video unfortunately that s been provided to the public, to the media, has been compressed, so it s been changed slightly by the police and by