6:37. he must have had some way to set it off have someone else do it. we are operating under now -- i'm not sure this isn't going to change -- is that he set some kind of a device to go off at a certain time, probably to coincide with his shooting. >> reporter: just watching that footage of him putting the bag into the car and him undoubtedly knowing at that point that the fire would begin shortly thereafter. that's when neighbors began to shoot the video you saw there. less than an hour later, about halfway through fighting that fire, the san jose fire department at that point realized something was very, very wrong. brought in heavy police presence. the street was filled with alcohol, tobacco and firearms agents, bomb techs, bomb dogs, people wearing gear. at that point, it became clear that the events that lindsey described was part of it. this was somebody very, very