Authorities say an Antioch man’s responsible for a gun scare that locked down Washington, D.C. for a time Monday. Larry Dawson, Age 66, was shot by Capitol police after he allegedly produced a pellet gun at the visitor’s center. The incident locked down the Federal Gov. for several hours. Dawson is no stranger to D.C. authorities. He was arrested in October for demonstrated to hick the federal criminal charges in TN. The man was not seriously injured as a result of the incident.