students from around the country are taking part in the march for our lives rally, calling on loawmakerso take action against gun violence in schools. we will have coverage starting at noon eastern on c-span. now a senate judiciary committee hearing on school safety. witnesses include the father of a student who died in the parkland high school attack, and a teacher who sheltered in place with her students during the shooting. this is three hours and 40 minutes. [crowd noise] sen. grassley: we welcome you to a very important oversight hearing. we're here this morning to discuss another national tragedy and reflect on the loss of 17 innocent lives. the february 14th, 2018, attack on marjory stoneman douglas high school