Andrew Pollack’s 18-year-old daughter, Meadow, was one of the victims of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla. Andrew Pollack had just settled into a folding chair in a palm-shaded campground when gunfire rang out from a nearby target range. It had been nearly a year since his 18-year-old daughter, Meadow, was shot to death …