INDIANAPOLIS (AP) — The Latest on the dangerously cold temperatures gripping much of the U.S. (all times local): 1:40 p.m. A Tennessee prison lost its main heating source on a frigid New Year's Day, and officials are trying to keep inmates and employees warm with extra blankets and portable heaters. Tennessee Department of Correction spokeswoman Neysa Taylor says Riverbend Maximum Security Institution lost hot water pressure Monday, causing its boiler to go offline. The staff is assessing what caused the pressure loss and hasn't provided a timeline for its return.