Thousands of mourners gathered at the crash site of Paul Walker and Roger Rodas for an unofficial memorial just more than one week after the pair’s death. Fans began arriving to the site hours before the start of the memorial, which spread quickly to thousands via social media. Officials said other than the sound of car engines, the crowds were quiet and cooperative. Some small groups of people were still lingering at the site hours after most fans cleared out. Kate Larsen and Jane Yamamoto report for the NBC4 News at 9 and 11 p.m. on Sunday, Dec. 8, 2013.