"Catastrophic" winds batter the Bahamas as Dorian lingers; 8-year-old boy first death reported in the Bahamas from Dorian; Dorian devastates the Bahamas, moves closer toward East Coast; Outer bands start to hit Florida as Dorian threatens East Coast; Hurricane Dorian moving dangerously close to Florida coast; Mandatory evacuations ordered along most of Florida's east coast as Dorian's outer bands move in; Tourism Ministry: Rescue efforts underway in parts of Bahamas; Coast Guard: Unclear what caused diving boat fire; FBI: Gunman called 911 and FBI tip line multiple times; Trump: Background check wouldn't have stopped shooter; Poll: 93% favor universal background checks; 72 % say Congress must do more on gun violence; Texas State Rep: I say no to gun reform, "yes" to prayer; Trump golfs, tweets political attacks as Dorian threatens U.S.; Millions under mandatory evacuations as Dorian moves in via Knit