John Wilford didn't know who the shooter was in aftermath of attack
                                
                                
                                    (Newser) -
                                    After fleeing the chaos at Marjory Stoneman Douglas High School in Parkland, Fla., on Feb. 14, 2018, John Wilford, then a freshman, walked to a nearby McDonald's, where he waited for his mother to pick him up. He didn't yet realize his sister, Maddy, had been shot at...