. >> reporter: assistant district attorney don geary interviewed several eyewitnesses. >> they thought it was a movie. >> reporter: a movie? >> they were actually looking around for the cameras, because understand, in that area, that is just totally foreign. >> it was almost surreal, the experience, in that there was no chaos or running or yelling or anything. he just walked back to his van and got in his van. it looked like it was professional. >> reporter: the killer escapes, leaving rusty sneiderman gasping for air on the pavement. >> it sounded like a gunshot over here. >> reporter: a cell phone video captures police and ambulances rushing to the scene. >> there was a lot of blood everywhere. we knew that, you know, it was probably some vital organs hit. there was no pulse and he was unresponsive. >> the last thing you think about is dropping off your child at school and something like this happened. >> it's very, very, very, very scary that happened. >> reporter: four days later, police still have no idea who killed rusty or why. his brother, steve, reaches out to the community, o