FILE - This Feb. 19, 2018 file photo shows Denyse Christian, hugging her son Adin Christian, 16, a student at the school, at a makeshift memorial outside the Marjory Stoneman Douglas High School, where 17 students and faculty were killed in a mass shooting in Parkland, Fla. Parkland city’s historian Jeff Schwartz is setting a plan in motion to collect, archive and preserve the Marjory Stoneman Douglas mementos. Meanwhile, school administrators have vowed to build a memorial after the demolition of the building where the Feb. 14 attack took place. (AP Photo/Gerald Herbert, File)