January 22, 2010 6:52 pm Doctors Return From Haiti After Mission Turned Upside Down Some doctors enroute to Haiti on a humanitarian trip had their mission turned upside down when the earthquake hit. Local 2:33 Witnesses describe hearing deadly Centreville shootout 0:36 1 dead, 2 hurt in shooting near DC's Fort Dupont Park 2:59 1 man dead, 1 man hurt in Centreville shooting: police 2:20 NTSB report reveals details about moments leading up to Key Bridge collapse 22:10 Voters head to the polls for Maryland primary: The News4 Rundown