October 18, 2016 6:33 am Market Street Collapse Architect Testifies Plato Marinakos denied responsibility for the deadly 2013 building collapse at 22nd and Market streets in Philadelphia. 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