>> reporter: biana, investigators will be going through the site today several blocks behind us. anthony quinn warner they announced his name yesterday after going through one of the homes that he lived in previously, the day before, we saw federal agents for hours going through taking out evidence from a home in antioch, tennessee, that's just about ten miles southeast of where we're standing. it's a tip about the rv that led them there and keep in mind, the blast was so vast but still able to get fragments of the rv to get a vehicle identification number to lead back to the owner. they also were able to process identifying him pretty quickly. they were taking the human remains found on the site, having that processed quickly at quantico, along with dna samples of warner's family members, that's how they got confirmation of this person as the suspect. police last night released new surveillance video of the dramatic moment when the explosion went off, just this giant ball of orange. you can see an officer walking away from the scene seconds before that happened. the mayor of nas