An officer responded to a medical call aboard a train. Medical responded and placed the sick person on the gurney. The sick person requested to exit the rig to urinate, which the paramedics complied. The sick person then punched both paramedics as they attempted to place him back onto the gurney. The paramedics then wished to place the sick person under citizen’s arrest for 243(b) P.C., Battery. The sick person was arrested for battery and issued a prohibition order. The suspect was then taken to Redwood City Jail for booking.