As I was riding the Metrolink into the city this morning, I noticed some rather prominent and prevalent signs on the train reminding riders not to carry on the train. Apparently, according to some of the “regular” riders on the train with us, the signs are brand new. Metrolink appears to be concerned that some convention-goer will accidentally bring a gun on their train and… Defend themselves? Quietly pass the ride in peace? Commit statistically 1/6 the crimes of the average population?