The shooting at Marjory Stoneman Douglas High School in Parkland, Florida raised the question of whether training programs can accidentally yield strategic information to would-be shooters. Like most U.S. states, Florida requires schools to test their plans with drills. The shooter, a former student, may have been familiar with the school's drills and emergency plans regarding active shootings; some alleged that he used the information to increase total casualties. The school had indeed received active shooter training before the actual shooting occurred, and the 2018 shooting in Parkland was the deadliest school place shooting in the United States since the Sandy Hook Elementary School shooting in 2012.