Missing flight path file led to loss of control of Orlando Christmas drone show: NTSB report

The National Transportation Safety Board released its preliminary report into what happened during a Christmas drone show at Lake Eola Park in downtown Orlando that caused some of the show's 500 drones to collide with one another, fall from the sky, and send others flying in rogue directions. At least one drone struck a 7-year-old boy, who suffered serious injury and had to undergo heart surgery, according to his family.