MIAMI, United States (AFP) — Video of the moment a gunman opened fire at a Florida airport emerged Sunday as authorities try to piece together his motive for traveling to the state to carry out a killing spree that left five dead and six wounded. Iraq war vet Esteban Santiago flew to the Fort Lauderdale airport on Friday and retrieved a 9mm semi-automatic handgun and ammunition that he had declared and packed in his checked luggage. […]