Survivors of the South Florida high school shooting are preparing for weekend marches promoting increased gun control. The March For Our Lives rallies are scheduled for tomorrow around the country. The students have made an app called "Be Heard" where people can find out information about their local marches. The students will march across the Eau Gallie Causeway! The event in Melbourne is expected to draw more than 700 people and students from at least 11 schools in Brevard. About 1,500 people are part of the Facebook group for the event. Participants are gathering at the east side of the causeway near the boat docks at noon.