captioning sponsored by cbs >> mason: deadly disasters in the deep south. >> we took off running. the wind picked us up and threw us. >> mason: tornadoes and wildfires destroy hundreds of buildings and force thousands to flee. also tonight, a charlotte police officer is cleared in the fatal shooting of a black man that led to days of unrest. >> officer vincent saw mr. scott holding up a semiautomatic handgun. >> mason: safari in southern california-- the hunt for a killer mountain lion. and, a wake-up call about the high cost of sleep deprivation for productivity and longevity. this is the "cbs evening news" with scott pelley. >> mason: good evening. scott is off tonight.