>> how would you describe it? >> as a gang? >> yeah, instead of a gang. what is the right word, do you think? >> family. >> a family? >> unty, friends. >> reporter: one biker is arrested for slowing down and causing that very first collision with the suv. his lawyer says his client is not guilty. in the meantime, tonight police continue searching for more witnesses and looking through videos of the incident frame by frame for every bit of evidence. erin? >> suzanne. back to the breaking story tonight, the car chase and deadly shooting on capitol hill started when a 34-year-old woman from connecticut tried to ram her car through a white house check point and we've been showing you this video that captured it unfolding. this video pretty incredible. when you start to hear shots, you're scared, droped to ground. not the person that shot this. police with the weapons drawn. the driver managing to escape. the suspect leading police then on a high-speed chase that ended