(Seattle, WA)  --  One man is facing charges after allegedly pulling a gun on a Good Samaritan trying to bring food to first responders at the scene of Monday's Amtrak derailment.  Police say the victim was stuck in backed-up traffic caused by the derailment when he tried to merge into another lane, where a car was being driven by suspect Jeffrey Dickerson.  The merge attempt allegedly prompted Dickerson to point a gun at the victim and make a threat.  A DuPont police officer tracked down the suspect and arrested him.  He faces trial in March.