Family members whose loved ones were killed during a massacre at a Parkland high school in February slammed the Broward County School board for failing to make schools safe, just one week before classes begin.

Guy Grace, a school-security official whose Colorado community was rocked by the 1999 murders at Columbine High School, was in Davie Wednesday to share school-hardening solutions with a commission formed after this year’s mass shooting at Marjory Stoneman Douglas High School in Parkland.

Problems with the communications system exposed by the response to a mass shooting at a Parkland high school aren’t isolated to Broward County, according to testimony at a meeting held by a commission tasked with preventing future catastrophes.