New York City high school senior Hiram Carrero was jailed Friday on a federal arson charge. Police say the 18-year-old set a fire that severely burned a sleeping subway passenger. The fire, which happened last Monday morning, is the latest in a string of incidents of people being set on fire on public transit across the U.S. Carrero was not required to enter a plea during his arraignment in Manhattan federal court.RELATED: Oh Wow! Wisconsin Man Accused Of Setting Neighbor's House On Fire On Thanksgiving DayHiram Carrero Lit Fire On SubwayU.S. District Judge Valerie E.