the obtained by tmz, shows the gunman pulling out a handgun and calmly firing in the florida airport. reporter: carol, new details surrounding the investigation emerging over the weekend, including that horrific surveillance video that shows the moments just as this attack was starting. also, incredible tales of heroism, including one where a 70-year-old electrician threw himself over a passenger acting as a human body shield. she described him as her guardian angel. also tales of terror from the attack victims. take a listen. she was standing right next to me. in the baggage claim? in the baggage claim.