 Arlington County police went to talk to the owners of a Jeep Cherokee that was almost stolen in a carjacking on July 5th. Investigators say that a Metro Transit police officer shot 30-year-old Mark Anthony Johnson Crestwell, who tried to carjack two different vehicles in Roslyn. Police said he was seen trying to get into two occupied vehicles before a Metro Transit officer pepper sprayed him while running away. He then hopped into an unoccupied trash truck. Police said the Metro Transit officer told him to exit the truck, but he refused.