The NYPD reports that an officer accidentally discharged his firearm during a mass arrest at Columbia University earlier this week while switching his firearm from one hand to another. Meanwhile, NYC Schools Chancellor David Banks has reaffirmed his support for transgender students participating in school sports. Also, city officials are noting a local and national rise in motorcycle fatalities. Finally, WNYC’s Michael Hill talks with FDNY EMS Lieutenant Paramedic Anthony Almojera about a new law requiring EMS workers to wear body armor and undergo new safety training.