Communications issues hamper evacuations downstream of failing Puerto Rican dam

tv/2017/09/22/tl-santiago-puerto-rico-maria-jake-tapper.cnn Puerto Rican officials could not communicate with more than half the towns in the U.S. territory as they rushed to evacuate tens of thousands of people downstream of a failing dam. Authorities launched an evacuation of the 70,000 people living downstream from the Guajataca Dam in northwest Puerto Rico, sending buses to move people away Friday and posting frantic warnings on Twitter that went unseen by many in the blacked-out coastal are