Chilling video footage captured the moment a deranged teenage gunman racks a round into the chamber of a 9mm handgun before running up to an NYPD vehicle and opening fire.

James Gaskins, 30, a previously convicted felon residing in the District of Columbia, was sentenced yesterday to 26 months in prison in connection with his possession of a loaded Glock 9mm pistol that was recovered after he attempted to flee from police in Southeast Washington, announced @USAttyPirro.