September 2, 2009 11:02 pm Teens Mourn Victims of Car Crash The first week of school in Upper Bucks started with tragedy as one teen was killed and others injured in an unexplained one car crash. US & World Videos 21:51 NBC10 @Issue: Reclassifying marijuana 0:35 Fans of ‘The Office' got to see some of the stars at Fan Expo Philadelphia on Saturday 2:32 Rainy, chilly weather didn't stop many from enjoying festivals throughout Philadelphia 0:29 Driver found safe after carjacking in Delaware 2:23 Teen killed in quadruple shooting in North Philadelphia on Saturday evening