sentences:  The hotel included an unsprinklered 17-story tower that housed 423 guest rooms.The fire alarm system in the tower was not working, and many guests were not aware of the fire until they saw or smelled it, heard someone shouting "Fire", or heard firefighters responding.In 1987, there were four major fire codes across the United States with over 1,800 variations because of local codes and ordinances, with one code having significant fire protection requirements, and another having nothing.