sentences:  Others died of smoke inhalation on upper floors of the casino.Still others were killed as they rode the elevators to the lobby, only to discover their path blocked by the fire when the doors opened.Those who were able to do so climbed to the hotel's roof, where an improvised helicopter rescue, including civilian, Commonwealth Police, Puerto Rico National Guard, U.S. Coast Guard, and U.S. Navy helicopters from the Roosevelt Roads Naval Air Station, transported people to safety.